{"id":13428,"date":"2026-07-13T13:29:48","date_gmt":"2026-07-13T04:29:48","guid":{"rendered":"https:\/\/code-plus.jp\/gp\/?p=13428"},"modified":"2026-07-16T13:15:55","modified_gmt":"2026-07-16T04:15:55","slug":"htmail-13428","status":"publish","type":"post","link":"https:\/\/code-plus.jp\/gp\/htmail-13428\/","title":{"rendered":"HTML\u30e1\u30fc\u30eb\u5236\u4f5c\u6642\u306e\u843d\u3068\u3057\u7a74 \u2014 Gmail\u30fbOutlook\u30fb\u30c0\u30fc\u30af\u30e2\u30fc\u30c9\u3059\u3079\u3066\u306b\u5bfe\u5fdc\u3059\u308bHTML\u30e1\u30fc\u30eb\u306e\u4f5c\u308a\u65b9"},"content":{"rendered":"<p><b class=\"fw-600\">\u306f\u3058\u3081\u306b\uff1aHTML\u30e1\u30fc\u30eb\u306fWeb\u306e\u5e38\u8b58\u304c\u901a\u3058\u306a\u3044<\/b><\/p>\r\n\r\n<p class=\"mt-1r\">Web\u30b5\u30a4\u30c8\u3068\u540c\u3058\u611f\u899a\u3067HTML\u30e1\u30fc\u30eb\u3092\u4f5c\u308b\u3068\u3001\u3060\u3044\u305f\u3044\u5d29\u308c\u307e\u3059\u3002<\/p>\r\n\r\n<ul style=\"list-style-type:bullet;\" class=\"my-0.5r\">\r\n  <li><code>flexbox<\/code>\u3001<code>grid<\/code>\u3001<code>position<\/code>\uff1a\u4f7f\u3048\u307e\u305b\u3093<\/li>\r\n  <li><code>&lt;head&gt;<\/code> \u306e <code>&lt;style&gt;<\/code>\uff1a\u7121\u8996\u3059\u308b\u30e1\u30fc\u30e9\u30fc\u304c\u3042\u308a\u307e\u3059<\/li>\r\n  <li><code>@media<\/code>\uff08\u30c0\u30fc\u30af\u30e2\u30fc\u30c9\u6642\u306e\u6307\u5b9a\uff09\uff1aGmail\u3067\u7121\u8996\u3055\u308c\u307e\u3059<\/li>\r\n  <li><code>&lt;!--&lsqb;if mso&rsqb;&gt;<\/code>\uff08Outlook\u7528\u6761\u4ef6\u5206\u5c90\uff09\uff1a\u5d29\u308c\u306e\u539f\u56e0\u306b\u306a\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059<\/li>\r\n<\/ul>\r\n\r\n<p>\u4e00\u65b9\u3067\u3001<b class=\"fw-600\">\u4e00\u5ea6\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u3092\u4f5c\u3063\u3066\u3057\u307e\u3048\u3070\u4f7f\u3044\u56de\u3057\u304c\u3067\u304d\u307e\u3059<\/b>\u3002<br \/>\r\n  \u3053\u306e\u8a18\u4e8b\u306f\u3001\u5b9f\u6848\u4ef6\uff08\u30e1\u30eb\u30de\u30ac\uff09\u3092\u8907\u6570\u5236\u4f5c\u3059\u308b\u306a\u304b\u3067\u5f97\u305f\u77e5\u898b\u3092\u307e\u3068\u3081\u305f\u3082\u306e\u3067\u3059\u3002<\/p>\r\n\r\n<p class=\"mt-1r\">\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u4e00\u5f0f\u306fgist\u306b\u7f6e\u304d\u307e\u3057\u305f\u3002<br \/>\r\n  <cite><a href=\"https:\/\/gist.github.com\/sarap422\/186f43ac02150b69232229f91072db15\" target=\"_blank\" class=\"link\">htmail-sample1.html \u2014 GitHub Gist<\/a><\/cite>\r\n<\/p>\r\n\r\n<picture class=\"bd-bounds mt-1r\"><img decoding=\"async\" src=\"https:\/\/code-plus.jp\/gp\/wp-content\/uploads\/htmail-sample1.jpeg?ver=20260716131555\" alt=\"\" width=\"960\" height=\"3527\" class=\"alignnone size-full wp-image-13528\" \/><\/picture>\r\n\r\n<!-- \u2756\u76ee\u6b21\u30ea\u30b9\u30c8 -->\r\n<ul class=\"tocList mt-1.5r\" data-toc-id=\"js-tocBWGD\" style=\"height:71rem\"><\/ul>\r\n<ins class=\"tocBtn is-fixed\" data-toc-id=\"js-tocBWGD\"><\/ins>\r\n\r\n<hr class=\"separator mt-3r\">\r\n\r\n<h2 class=\"fz-xl\">1. CSS Reset\u306e\u30d9\u30fc\u30b9\u9078\u5b9a<\/h2>\r\n\r\n<p>Cerberus\u3001ZURB\u3001Benchmark Email\u3001Antwort\u3001ColorlibHQ \u306a\u3069<br class=\"d-none_sp\" \/>\u8907\u6570\u306eHTML\u30e1\u30fc\u30eb\u7528\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u3092\u8abf\u67fb\u3057\u305f\u7d50\u679c\u3001<b class=\"fw-600\">Cerberus\uff08MIT\u30e9\u30a4\u30bb\u30f3\u30b9\uff09<\/b>\u306eCSS Reset\u3092\u30d9\u30fc\u30b9\u306b\u63a1\u7528\u3057\u307e\u3057\u305f\u3002\u7406\u7531\u306f\u3001\u69cb\u9020\u304c\u30b7\u30f3\u30d7\u30eb\u306a\u3053\u3068\u3068\u3001\u4e3b\u8981\u306aGmail\u30cf\u30c3\u30af\u304c\u6700\u521d\u304b\u3089\u5165\u3063\u3066\u3044\u308b\u3053\u3068\u3067\u3059\u3002<\/p>\r\n\r\n<p>Cerberus \u306f Ted Goas \u6c0f\u304c\u516c\u958b\u3057\u3066\u3044\u308b\u30ec\u30b9\u30dd\u30f3\u30b7\u30d6\u30e1\u30fc\u30eb\u306e\u30d1\u30bf\u30fc\u30f3\u96c6\u3067\u3001\u30b3\u30fc\u30c9\u304c\u533a\u753b\u3054\u3068\u306b\u5206\u304b\u308c\u3066\u3044\u3066\u3001\u7d44\u307f\u5408\u308f\u305b\u305f\u308a\u5165\u308c\u5b50\u306b\u3057\u305f\u308a\u3057\u30661\u901a\u3092\u7d44\u307f\u7acb\u3066\u3089\u308c\u308b\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u300c\u533a\u753b\u3054\u3068\u300d\u3068\u3044\u3046\u8003\u3048\u65b9\u306f\u3001\u5f8c\u8ff0\u306e <b class=\"fw-600\">2-4<\/b> \u3067\u305d\u306e\u307e\u307e\u4f7f\u3044\u307e\u3059\u3002<\/p>\r\n\r\n<p class=\"mt-1r\">\u30c7\u30b6\u30a4\u30f3\u306e\u53c2\u8003\u306b\u306f ColorlibHQ \u306e Free Email Templates \u3092\u898b\u307e\u3057\u305f\u3002\u305f\u3060\u3057\u3042\u3061\u3089\u306fMJML\u3067\u751f\u6210\u3055\u308c\u305f\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u3067\u3001\u30ab\u30e9\u30e0\u5236\u5fa1\u3068 <code>&lt;!--&lsqb;if mso | IE&rsqb;&gt;<\/code> \u306e\u6761\u4ef6\u5206\u5c90\u304c\u5168\u4f53\u306b\u5165\u3063\u3066\u3044\u307e\u3059\u3002 <code>&lt;!--&lsqb;if mso | IE&rsqb;&gt;<\/code> \u306f\u53d7\u3051\u4ed8\u3051\u306a\u3044\u30e1\u30fc\u30eb\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u304c\u3042\u3063\u305f\u308a\u3059\u308b\u3053\u3068\u304b\u3089\u3001\u30b3\u30fc\u30c9\u306e\u30d9\u30fc\u30b9\u306b\u306f\u3057\u3066\u3044\u307e\u305b\u3093\u3002<\/p>\r\n\r\n<p>Cerberus\u3092\u305d\u306e\u307e\u307e\u4f7f\u3063\u3066\u3082\u65e5\u672c\u8a9e\u5236\u4f5c\u74b0\u5883\u306b\u306f\u5408\u308f\u306a\u3044\u306e\u3067\u3001\u4ee5\u4e0b\u306e\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u304c\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\r\n\r\n<hr class=\"separator mt-3r\">\r\n\r\n<h2 class=\"fz-xl\">2. \u3069\u306e\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3067\u3082\u5d29\u308c\u306a\u3044\u8a2d\u8a08<\/h2>\r\n\r\n<h3 class=\"fz-ml\">2-1. \u5e45\u306f max-width: 680px \u301c 750px \u7a0b\u5ea6<\/h3>\r\n<p>\u7d4c\u9a13\u7684\u306b\u3001\u3053\u306e\u304f\u3089\u3044\u304cPC\u30e1\u30fc\u30e9\u30fc\u3068\u30b9\u30de\u30fc\u30c8\u30d5\u30a9\u30f3\u306e\u30d0\u30e9\u30f3\u30b9\u304c\u826f\u3044\u3067\u3059\u3002<br \/>\r\n  \uff08\u3042\u307e\u308a\u5e45\u304c\u5c0f\u3055\u3044\u3068\u3001\u4e00\u90e8\u306ePC\u30e1\u30fc\u30e9\u30fc\u306f\u5e45\u3092\u3044\u3063\u3071\u3044\u3044\u3063\u3071\u3044\u306b\u5e83\u3052\u308b\u306e\u3067\u3001\u5927\u304d\u304f\u8868\u793a\u3055\u308c\u307e\u3059\uff09<\/p>\r\n\r\n<pre><code class=\"language-html\">&lt;div style=\"max-width:680px; margin:0 auto;\" class=\"email-container\"&gt;\r\n  &lt;!-- \u30b3\u30f3\u30c6\u30f3\u30c4 --&gt;\r\n&lt;\/div&gt;<\/code><\/pre>\r\n\r\n<h3 class=\"fz-ml\">2-2. \u30ec\u30a4\u30a2\u30a6\u30c8\u306f <code>&lt;table&gt;<\/code> \u4e00\u629e<\/h3>\r\n<p>CSS\u306e <code>display:flex<\/code> \u3084 <code>display:grid<\/code> \u306fOutlook\u304c\u7121\u8996\u3057\u307e\u3059\u3002<br class=\"d-none_sp\" \/>\u30c6\u30fc\u30d6\u30eb\u30ec\u30a4\u30a2\u30a6\u30c8\u306e\u307f\u304c\u73fe\u72b6\u3082\u3063\u3068\u3082\u5b89\u5168\u3067\u3059\u3002<\/p>\r\n<pre><code class=\"language-html\">&lt;table width=\"100%\" cellpadding=\"0\" cellspacing=\"0\" border=\"0\"&gt;\r\n  &lt;tr&gt;\r\n    &lt;td style=\"padding: 20px 5%;\"&gt;\r\n      &lt;!-- \u30b3\u30f3\u30c6\u30f3\u30c4 --&gt;\r\n    &lt;\/td&gt;\r\n  &lt;\/tr&gt;\r\n&lt;\/table&gt;<\/code><\/pre>\r\n<blockquote class=\"alert my-0.5r\">\r\n  <p><b class=\"fw-600\">MSO\u6761\u4ef6\u5206\u5c90\uff08<code>&lt;!--&lsqb;if mso&rsqb;&gt;<\/code>\uff09\u306f\u4f7f\u3044\u307e\u305b\u3093<\/b><br>\u52b9\u304b\u306a\u3044\u30e1\u30fc\u30e9\u30fc\u304c\u591a\u304f\u3001\u5d29\u308c\u306e\u539f\u56e0\u306b\u306a\u308b\u30b1\u30fc\u30b9\u3082\u3042\u3063\u305f\u305f\u3081\u524a\u9664\u3057\u307e\u3057\u305f\u3002\u3055\u3089\u306b\u3001\u300eSansan\u300f\u306e\u3088\u3046\u306b\u6761\u4ef6\u5206\u5c90\u30b3\u30e1\u30f3\u30c8\u3092\u53d7\u3051\u4ed8\u3051\u306a\u3044\u30e1\u30fc\u30eb\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u304c\u3042\u308a\u307e\u3059\u3002table\u69cb\u9020\u306b\u7d71\u4e00\u3057\u305f\u65b9\u304c\u7d50\u679c\u7684\u306b\u30b7\u30f3\u30d7\u30eb\u3067\u5b89\u5b9a\u3057\u307e\u3059\u3002<\/p>\r\n<\/blockquote>\r\n\r\n<h3 class=\"fz-ml\">2-3. \u30b9\u30bf\u30a4\u30eb\u306f\u3059\u3079\u3066\u30a4\u30f3\u30e9\u30a4\u30f3<\/h3>\r\n<p><code>&lt;head&gt;<\/code> \u306e <code>&lt;style&gt;<\/code> \u3092\u7121\u8996\u3059\u308b\u30e1\u30fc\u30e9\u30fc\u304c\u5b58\u5728\u3057\u307e\u3059\uff08\u4ee3\u8868\u4f8b\uff1a\u4e00\u90e8\u306eOutlook\u30fb\u65e7\u6765\u306eYahoo!\u30e1\u30fc\u30eb\uff09\u3002\u305d\u306e\u305f\u3081<b class=\"fw-600\">\u4e3b\u8981\u306a\u30b9\u30bf\u30a4\u30eb\u306f\u30a4\u30f3\u30e9\u30a4\u30f3\u3067<\/b>\u8a18\u8ff0\u3057\u307e\u3059\u3002<\/p>\r\n<blockquote class=\"alert my-0.5r\">\r\n  <p><b class=\"fw-600\">CSS \u30af\u30e9\u30b9\u306f\u4fdd\u5b88\u7528\u3068\u3057\u3066\u8a18\u8ff0\u3057\u3066\u3082\u826f\u3044\u3067\u3059\u304c\u3001\u8868\u793a\u306f\u30a4\u30f3\u30e9\u30a4\u30f3\u306b\u4f9d\u5b58\u3055\u305b\u307e\u3059\u3002<\/b><\/p>\r\n<\/blockquote>\r\n\r\n<h3 class=\"fz-ml\">2-4. 1\u3064\u306e <code>&lt;table&gt;<\/code> = 1\u3064\u306e\u533a\u753b<\/h3>\r\n<p>\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u306e <code>&lt;table&gt;<\/code> \u3092\u3001header \/ section \/ footer \u306e\u3088\u3046\u306a\u610f\u5473\u306e\u30d6\u30ed\u30c3\u30af\u3054\u3068\u306b\u5206\u3051\u3066\u66f8\u304d\u307e\u3059\u3002<\/p>\r\n\r\n<pre><code class=\"language-html\">&lt;div style=\"max-width:680px; margin:0 auto;\" class=\"email-container\"&gt;\r\n\r\n  &lt;table class=\"header\"&gt;  ... &lt;\/table&gt;\r\n\r\n  &lt;table class=\"section\"&gt; ... &lt;\/table&gt;\r\n  &lt;table class=\"section\"&gt; ... &lt;\/table&gt;\r\n  &lt;table class=\"section\"&gt; ... &lt;\/table&gt;\r\n\r\n  &lt;table class=\"footer\"&gt;  ... &lt;\/table&gt;\r\n\r\n&lt;\/div&gt;<\/code><\/pre>\r\n\r\n<p>\u5404\u30c6\u30fc\u30d6\u30eb\u306e\u5185\u5074\u3067\u306f\u3001<code>&lt;td&gt;<\/code> \u306b\u30af\u30e9\u30b9\u3092\u632f\u3063\u3066\u30d6\u30ed\u30c3\u30af\u5185\u306e\u30d1\u30fc\u30c4\u3092\u8868\u3057\u307e\u3059\u3002<code>.picture<\/code>\uff08\u5199\u771f\uff09\u3001<code>.impress<\/code>\uff08\u898b\u51fa\u3057\u753b\u50cf\uff09\u3001<code>.text<\/code>\uff08\u672c\u6587\u30fb\u30dc\u30bf\u30f3\uff09\u3068\u3044\u3063\u305f\u5177\u5408\u3067\u3059\u3002<\/p>\r\n\r\n<p>1\u30c6\u30fc\u30d6\u30eb1\u533a\u753b\u306b\u3057\u3066\u304a\u304f\u3068\u3001\u9806\u5e8f\u306e\u5165\u308c\u66ff\u3048\u30fb\u8ffd\u52a0\u30fb\u524a\u9664\u304c\u30d6\u30ed\u30c3\u30af\u5358\u4f4d\u3067\u5b8c\u7d50\u3057\u307e\u3059\u3002Cerberus\u306e\u300c\u533a\u753b\u3092\u7d44\u307f\u5408\u308f\u305b\u30661\u901a\u3092\u7d44\u307f\u7acb\u3066\u308b\u300d\u3068\u3044\u3046\u8003\u3048\u65b9\u3092\u305d\u306e\u307e\u307e\u8e0f\u8972\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\r\n\r\n<h3 class=\"fz-ml\">2-5. 2\u30ab\u30e9\u30e0\u30fb3\u30ab\u30e9\u30e0\u306b\u3059\u308b\u3068\u304d<\/h3>\r\n<p><code>&lt;table&gt;<\/code> \u306a\u306e\u3067\u3001<code>&lt;td&gt;<\/code> \u3092\u6a2a\u306b\u4e26\u3079\u308c\u3070\u30ab\u30e9\u30e0\u5206\u5272\u306f\u3067\u304d\u307e\u3059\u3002<\/p>\r\n\r\n<pre><code class=\"language-html\">&lt;tr&gt;\r\n  &lt;td width=\"33.33%\"&gt; ... &lt;\/td&gt;\r\n  &lt;td width=\"33.33%\"&gt; ... &lt;\/td&gt;\r\n  &lt;td width=\"33.33%\"&gt; ... &lt;\/td&gt;\r\n&lt;\/tr&gt;<\/code><\/pre>\r\n\r\n<p>\u305f\u3060\u3001\u4f59\u767d\u3084\u30b9\u30da\u30fc\u30b9\u304c\u3070\u3089\u3070\u3089\u3060\u3063\u305f\u308a\u3001<code>border-radius<\/code> \u304c\u4f7f\u3048\u306a\u304b\u3063\u305f\u308a\u3059\u308b\u4e2d\u3067\u30c7\u30b6\u30a4\u30ca\u30fc\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u306b\u5fdc\u3048\u3088\u3046\u3068\u3059\u308b\u3068\u3001\u7d50\u5c40<b class=\"fw-600\">\u30bb\u30eb\u306e\u4e2d\u306b <code>width:100%<\/code> \u306e\u753b\u50cf\u3092\u5165\u308c\u3066\u7e26\u7a4d\u307f\u3059\u308b<\/b>\u306e\u304c\u4e00\u756a\u3066\u3063\u3068\u308a\u65e9\u3044\u3001\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u30021\u30ab\u30e9\u30e0\u306a\u3089100%\u30012\u30ab\u30e9\u30e0\u306a\u308950%\u30013\u30ab\u30e9\u30e0\u306a\u308933.33%\u3067\u3059\u3002<\/p>\r\n\r\n<hr class=\"separator mt-3r\">\r\n\r\n<h2 class=\"fz-xl\">3. \u4f7f\u3048\u308bHTML\u30bf\u30b0\u3068CSS<\/h2>\r\n\r\n<h3 class=\"fz-ml\">\u4f7f\u3048\u308b\u30bf\u30b0\uff08\u4e3b\u8981\u306a\u3082\u306e\uff09<\/h3>\r\n<pre><code class=\"language-\">table, tr, th, td\r\nimg\r\np, strong, small, span\r\nh1, h2, h3, h4, h5, h6\r\na, u, hr, br<\/code><\/pre>\r\n\r\n<h3 class=\"fz-ml\">\u4f7f\u3048\u308bCSS\u30d7\u30ed\u30d1\u30c6\u30a3\uff08\u30a4\u30f3\u30e9\u30a4\u30f3\u9650\u5b9a\uff09<\/h3>\r\n<pre><code class=\"language-\">background, background-color\r\nborder\uff08\u5404\u8fba\u6307\u5b9a\u542b\u3080\uff09\r\ncolor\r\ndisplay\r\nfont, font-family, font-size, font-style, font-weight\r\nheight, width\r\nletter-spacing, line-height\r\npadding\uff08\u5404\u8fba\u6307\u5b9a\u542b\u3080\uff09\r\ntable-layout\r\ntext-align, text-decoration, text-indent, text-transform\r\nvertical-align<\/code><\/pre>\r\n<p><code>position<\/code>\u3001<code>float<\/code>\u3001<code>flexbox<\/code>\u3001<code>grid<\/code> \u306f<b class=\"fw-600\">\u4f7f\u3044\u307e\u305b\u3093<\/b>\u3002<\/p>\r\n\r\n<hr class=\"separator mt-3r\">\r\n\r\n<h2 class=\"fz-xl\">4. Gmail\u306e\u30af\u30bb\u306b\u5bfe\u3059\u308b\u30cf\u30c3\u30af\u96c6<\/h2>\r\n<p>Cerberus\u306eCSS Reset\u306b\u542b\u307e\u308c\u308b\u4ee3\u8868\u7684\u306a\u30cf\u30c3\u30af\u3067\u3059\u3002\u306a\u305c\u5fc5\u8981\u306a\u306e\u304b\u3092\u7c21\u6f54\u306b\u307e\u3068\u3081\u307e\u3059\u3002<\/p>\r\n<pre><code class=\"language-css\">\/* \u2460 \u5927\u304d\u3044\u975e\u30ea\u30f3\u30af\u753b\u50cf\u306bGmail\u304c\u300c\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u300d\u30dc\u30bf\u30f3\u3092\u8868\u793a\u3059\u308b\u306e\u3092\u9632\u3050 *\/\r\n.a6S {\r\n  display: none !important;\r\n  opacity: 0.01 !important;\r\n}\r\n\r\n\/* \u2461 \u30b9\u30ec\u30c3\u30c9\u8868\u793a\u6642\u306bGmail\u304c\u30c6\u30ad\u30b9\u30c8\u30ab\u30e9\u30fc\u3092\u5909\u66f4\u3059\u308b\u306e\u3092\u9632\u3050 *\/\r\n.im {\r\n  color: inherit !important;\r\n}\r\n\r\n\/* \u2462 Gmail\u306eiOS\u30a2\u30d7\u30ea\u3067\u53f3\u306b\u4f59\u767d\u304c\u3067\u304d\u308b\u554f\u984c\u3092\u9632\u3050 *\/\r\n@media only screen and (min-device-width: 375px) and (max-device-width: 413px) {\r\n  u~div .email-container {\r\n    min-width: 375px !important;\r\n  }\r\n}\r\n\r\n\/* \u2463 Android 4.4\u3067\u4e0a\u4e0b\u306b\u4f59\u767d\u304c\u5165\u308b\u554f\u984c\u3092\u9632\u3050 *\/\r\ndiv&lsqb;style*=\"margin: 16px 0\"&rsqb; {\r\n  margin: 0 !important;\r\n}<\/code><\/pre>\r\n\r\n<p>\u2462 \u306f\u753b\u9762\u5e45\u3054\u3068\u306b1\u3064\u305a\u3064\u66f8\u304d\u307e\u3059\u3002<br class=\"d-none_sp\" \/>Cerberus\u3067\u306f 320px \/ 375px \/ 414px \u306e3\u3064\u304c\u7528\u610f\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\r\n\r\n<hr class=\"separator mt-3r\">\r\n\r\n<h2 class=\"fz-xl\">5. \u30c0\u30fc\u30af\u30e2\u30fc\u30c9\u5bfe\u7b56<\/h2>\r\n<p><b class=\"fw-600\">Gmail\uff08iOS\/Android\uff09\u306f <code>@media (prefers-color-scheme: dark)<\/code> \u3092\u7121\u8996\u3057\u307e\u3059\u3002<\/b><br \/><code>@media<\/code> \u3067\u30c0\u30fc\u30af\u30e2\u30fc\u30c9\u6642\u306e\u30b9\u30bf\u30a4\u30eb\u3092\u5207\u308a\u66ff\u3048\u308b\u30a2\u30d7\u30ed\u30fc\u30c1\u306f\u6a5f\u80fd\u3057\u306a\u3044\u74b0\u5883\u304c\u591a\u3044\u3067\u3059\u3002<br \/>\u305d\u306e\u305f\u3081\u3001\u63a1\u7528\u3057\u305f\u65b9\u91dd\u306f\u300c<b class=\"fw-600\">\u30c0\u30fc\u30af\u30e2\u30fc\u30c9\u306b\u5de6\u53f3\u3055\u308c\u306a\u3044\u30c7\u30b6\u30a4\u30f3\u3092\u4f5c\u308b<\/b>\u300d\u3053\u3068\u3067\u3059\u3002<\/p>\r\n\r\n<h3 class=\"fz-ml\">5-1. \u8584\u3044\u80cc\u666f\u8272\u306f background-color \u3067\u306f\u306a\u304f\u3001background-image \u3067\u8868\u73fe\u3059\u308b<\/h3>\r\n<p><code>background-color<\/code> \u306f\u30e1\u30fc\u30e9\u30fc\u306b\u3088\u3063\u3066<b class=\"fw-600\">\u30c0\u30fc\u30af\u30e2\u30fc\u30c9\u6642\u306b\u81ea\u52d5\u53cd\u8ee2<\/b>\u3055\u308c\u307e\u3059\uff08\u767d\u2192\u9ed2\u306a\u3069\uff09\u3002<br \/>\u4e00\u65b9\u3001<b class=\"fw-600\">\u753b\u50cf\u30d5\u30a1\u30a4\u30eb\u306f\u30e1\u30fc\u30e9\u30fc\u304c\u53cd\u8ee2\u3057\u307e\u305b\u3093<\/b>\u3002<\/p>\r\n<p>\u2192 \u8584\u3044\u30af\u30ea\u30fc\u30e0\u8272\u306a\u3069\u306e\u80cc\u666f\u306f\u300130x30px\u306e\u753b\u50cf\u3092 <code>background-image<\/code> \u3067\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u30e9\u30a4\u30c8\/\u30c0\u30fc\u30af\u4e21\u74b0\u5883\u3067\u56fa\u5b9a\u3067\u304d\u307e\u3059\u3002<\/p>\r\n<pre><code class=\"language-html\">&lt;td style=\"\r\n  background: #F7F3ED;\r\n  background-image: url(https:\/\/i.gyazo.com\/0d2f1d218a133da4a3ec0d10555a5212.png);\r\n  background-size: contain;\r\n\"&gt;<\/code><\/pre>\r\n\r\n<h3 class=\"fz-ml\">5-2. \u30b0\u30ec\u30fc\u306e\u30c6\u30ad\u30b9\u30c8\u306f <code>hsl(0,0%,50%)<\/code><\/h3>\r\n\r\n<p>\u30c0\u30fc\u30af\u30e2\u30fc\u30c9\u306f\u3001\u8272\u306e<b class=\"fw-600\">\u660e\u5ea6\u3092\u53cd\u8ee2<\/b>\u3055\u305b\u307e\u3059\u3002<\/p>\r\n<p>\u3053\u3053\u3067 <code>#808080\uff08hsl(0, 0%, 50%)\uff09<\/code>\u3092\u4f7f\u3044\u307e\u3059\u3002<b class=\"fw-600\">\u660e\u5ea650%\u306f\u3001\u53cd\u8ee2\u3057\u3066\u308250%\u306e\u307e\u307e<\/b>\u3067\u3059\u3002<\/p>\r\n\r\n<pre><code class=\"language-\">#808080   L=50.0%  \u2192  \u53cd\u8ee2  \u2192  L=50.0%  =  #808080   \uff08\u5b8c\u5168\u306b\u4e0d\u5909\uff09\r\n#888888   L=53.3%  \u2192  \u53cd\u8ee2  \u2192  L=46.7%  =  #777777   \uff08\u308f\u305a\u304b\u306b\u30ba\u30ec\u308b\uff09\r\n#2E211B   L=14.3%  \u2192  \u53cd\u8ee2  \u2192  L=85.7%  =  #DBDBDB   \uff08\u767d\u304f\u98db\u3076\uff09\r\n#FFFFFF   L=100 %  \u2192  \u3057\u304d\u3044\u5024\u306e\u4e0a\u306a\u306e\u3067\u3001\u305d\u306e\u307e\u307e<\/code><\/pre>\r\n\r\n<p>\u3064\u307e\u308a <b class=\"fw-600\">50% \u306f\u53cd\u8ee2\u306e\u4e0d\u52d5\u70b9<\/b>\u3067\u3059\u3002\u30e9\u30a4\u30c8\u30e2\u30fc\u30c9\u3067\u3082\u30c0\u30fc\u30af\u30e2\u30fc\u30c9\u3067\u3082\u3001\u307e\u3063\u305f\u304f\u540c\u3058\u8272\u3067\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\r\n\r\n<h4 class=\"fz-m\">\u5c11\u3057\u3060\u3051\u6fc3\u304f\u3059\u308b\uff1amix-blend-mode: multiply<\/h4>\r\n\r\n<p><code>#808080<\/code> \u306f\u8584\u3044\u80cc\u666f\u306e\u4e0a\u3067\u30b3\u30f3\u30c8\u30e9\u30b9\u30c8\u6bd4 <b class=\"fw-600\">3.57:1<\/b>\u3002\u8aad\u3081\u306a\u304f\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u4f59\u88d5\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u305d\u3053\u3067 <code>mix-blend-mode: multiply<\/code> \u3092\u8db3\u3057\u307e\u3059\u3002<\/p>\r\n\r\n<pre><code class=\"language-html\">&lt;p style=\"\r\ncolor: hsl(0,0%,50%);\r\nmix-blend-mode: multiply;\r\nline-height: 1.66;\r\nfont-size: 17px;\r\n\"&gt;\r\n\u65ec\u306e\u30b7\u30f3\u30b0\u30eb\u30aa\u30ea\u30b8\u30f3\u304c\u5165\u8377\u3057\u307e\u3057\u305f\u3002\r\n&lt;\/p&gt;<\/code><\/pre>\r\n\r\n<p><code>multiply<\/code> \u306f <b class=\"fw-600\">\u7d50\u679c = \u6587\u5b57\u306e\u8272 \u00d7 \u80cc\u666f\u306e\u8272<\/b> \u3068\u3044\u3046\u8a08\u7b97\u3067\u3059\u3002<code>#808080<\/code> \u304c <code>#7C7A77<\/code> \u306b\u306a\u3063\u3066\u3001<b class=\"fw-600\">3.57:1 \u2192 3.87:1<\/b>\u3002\u6c17\u6301\u3061\u6fc3\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\r\n\r\n<blockquote class=\"alert my-0.5r\">\r\n<code>filter<\/code> \u306e\u307b\u3046\u304c\u52b9\u304d\u5e45\u306f\u5927\u304d\u3044\uff08<code>#484848<\/code> \u76f8\u5f53\u307e\u3067\u6fc3\u304f\u306a\u308b\uff09\u306e\u3067\u3059\u304c\u3001<a href=\"https:\/\/www.caniemail.com\/features\/css-filter\/\" target=\"_blank\" class=\"link\">\u5bfe\u5fdc\u304c46%\u7a0b\u5ea6<\/a>\u3067\u3001Gmail\u30fbOutlook\u30fbYahoo!\u30e1\u30fc\u30eb\u306e\u3044\u305a\u308c\u3067\u3082\u52b9\u304d\u307e\u305b\u3093\u3002<code>mix-blend-mode<\/code> \u306f<b class=\"fw-600\">Gmail\u30a2\u30d7\u30ea\u3068\uff08\u30af\u30e9\u30b7\u30c3\u30af\u3067\u306a\u3044\uff09Outlook\u3067\u52b9\u304f<\/b>\u3076\u3093\u3001\u5c4a\u304f\u7bc4\u56f2\u304c\u5e83\u3044\u3067\u3059\u3002<\/p>\r\n<\/blockquote>\r\n\r\n<p>\u7d50\u679c\u3068\u3057\u3066\u3001\u30e9\u30a4\u30c8\u30e2\u30fc\u30c9\/\u30c0\u30fc\u30af\u30e2\u30fc\u30c9\u306e\u3069\u3061\u3089\u3067\u3082<br class=\"d-none_sp\" \/><b class=\"fw-600\">\u540c\u3058\u6fc3\u3055\u306e\u30b0\u30ec\u30fc\u30c6\u30ad\u30b9\u30c8\u304c\u8584\u3044\u80cc\u666f\u306e\u4e0a\u306b\u4e57\u308a\u307e\u3059<\/b>\u3002<\/p>\r\n\r\n<img decoding=\"async\" class=\"mt-1r\" src=\"https:\/\/code-plus.jp\/gp\/wp-content\/uploads\/htmail-sample1_005_dark_1.jpg?ver=20260716131555\" alt=\"\" width=\"1179\" height=\"653\" class=\"alignnone size-full wp-image-13518\" \/>\r\n<p>\uff08\u2191\u30c0\u30fc\u30af\u30e2\u30fc\u30c9\u3067\u3082\u30b0\u30ec\u30fc\u30c6\u30ad\u30b9\u30c8\u304c\u8584\u3044\u80cc\u666f\u306e\u4e0a\u306b\u4e57\u3063\u3066\u3044\u308b\uff09<\/p>\r\n\r\n<p class=\"mt-1r\">\u9006\u306b\u3001<code>color:#2E211B<\/code>\uff08L=14.3%\uff09\u306e\u3088\u3046\u306a\u6fc3\u3044\u8272\u3092\u8584\u3044\u80cc\u666f\u306e\u4e0a\u306b\u76f4\u63a5\u66f8\u304f\u3068\u3001\u53cd\u8ee2\u3057\u3066 <code>#DBDBDB<\/code>\uff08L=85.7%\uff09\u306b\u306a\u308b\u4e00\u65b9\u3001\u80cc\u666f\u306f\u753b\u50cf\u306a\u306e\u3067\u53cd\u8ee2\u3057\u307e\u305b\u3093\u3002<b class=\"fw-600\">\u8584\u3044\u80cc\u666f\u306b\u8584\u3044\u6587\u5b57\u304c\u4e57\u3063\u3066\u8aad\u3081\u306a\u304f\u306a\u308a\u307e\u3059\u3002<\/b><\/p>\r\n\r\n<br>\r\n<blockquote class=\"alert my-0.5r\">\r\n  <p><b class=\"fw-600\">\u88dc\u8db3\uff1a\u6fc3\u3044\u80cc\u666f\u8272\uff08\u30b0\u30ea\u30fc\u30f3\u3001\u30c0\u30fc\u30af\u30d6\u30eb\u30fc\u306a\u3069\uff09\u306e\u4e0a\u306b <code>color:#FFFFFF<\/code> \u306e\u30c6\u30ad\u30b9\u30c8\u3092\u7f6e\u304f\u5834\u5408\u306f\u3001\u3053\u306e\u30cf\u30c3\u30af\u306f\u4e0d\u8981\u3067\u3059\u3002<\/b><\/p>\r\n<\/blockquote>\r\n\r\n<img decoding=\"async\" class=\"mt-1r\" src=\"https:\/\/code-plus.jp\/gp\/wp-content\/uploads\/htmail-sample1_005_lignt_2.jpg?ver=20260716131555\" alt=\"\" width=\"1179\" height=\"346\" class=\"alignnone size-full wp-image-13521\" \/>\r\n<img decoding=\"async\" class=\"mt-1r\" src=\"https:\/\/code-plus.jp\/gp\/wp-content\/uploads\/htmail-sample1_005_dark_2.jpg?ver=20260716131555\" alt=\"\" width=\"1179\" height=\"346\" class=\"alignnone size-full wp-image-13519\" \/>\r\n<p>\uff08\u2191\u6fc3\u3044\u80cc\u666f\u8272\u306e\u4e0a\u306b\u3001color:#FFFFFF \u306e\u30c6\u30ad\u30b9\u30c8\u3092\u7f6e\u304f\u5834\u5408\u306f\u53cd\u8ee2\u3055\u308c\u306a\u3044\uff09<\/p>\r\n\r\n<h3 class=\"fz-ml\">5-3. \u91cd\u8981\u306a\u60c5\u5831\u306f\u753b\u50cf\u3067\u8868\u73fe\u3059\u308b<\/h3>\r\n<p>\u30d8\u30c3\u30c0\u30fc\u306e\u30bf\u30a4\u30c8\u30eb\u3001\u4fa1\u683c\u3001\u30ad\u30e3\u30c3\u30c1\u30b3\u30d4\u30fc\u306a\u3069\u3001<br class=\"d-none_sp\" \/>\u30c7\u30b6\u30a4\u30f3\u4e0a\u91cd\u8981\u306a\u60c5\u5831\u306f<b class=\"fw-600\">\u753b\u50cf\u306b\u3057\u3066\u3057\u307e\u3046<\/b>\u306e\u304c\u6700\u3082\u78ba\u5b9f\u3067\u3059\u3002<\/p>\r\n<pre><code class=\"language-html\">&lt;img\r\n  src=\"https:\/\/i.gyazo.com\/0e5d0ebe2cf625dfca38dff5fb3595f8.png\"\r\n  alt=\"SINGLE ORIGIN&amp;#13;&amp;#10;\u65ec\u306e\u30b7\u30f3\u30b0\u30eb\u30aa\u30ea\u30b8\u30f3\u304c\u5165\u8377\u3057\u307e\u3057\u305f\u3002\"\r\n  style=\"width: 100%; display: inline-block;\"\r\n\/&gt;<\/code><\/pre>\r\n\r\n<img decoding=\"async\" class=\"mt-1r\" src=\"https:\/\/code-plus.jp\/gp\/wp-content\/uploads\/htmail-sample1_005_lignt_3.jpg?ver=20260716131555\" alt=\"\" width=\"1179\" height=\"667\" class=\"alignnone size-full wp-image-13522\" \/>\r\n<img decoding=\"async\" class=\"mt-1r\" src=\"https:\/\/code-plus.jp\/gp\/wp-content\/uploads\/htmail-sample1_005_dark_3.jpg?ver=20260716131555\" alt=\"\" width=\"1179\" height=\"718\" class=\"alignnone size-full wp-image-13520\" \/>\r\n<p>\uff08\u2191\u753b\u50cf\u3060\u3068\u9593\u9055\u3044\u306a\u3044\uff09<\/p>\r\n\r\n<p class=\"mt-1r\">\u305f\u3060\u3057\u3001\u5168\u90e8\u3092\u753b\u50cf\u306b\u3059\u308b\u3068\u5225\u306e\u554f\u984c\u304c\u51fa\u307e\u3059\u3002<b class=\"fw-600\">7-5<\/b> \u3067\u66f8\u304d\u307e\u3059\u3002<\/p>\r\n\r\n<hr class=\"separator mt-3r\">\r\n\r\n<h2 class=\"fz-xl\">6. \u753b\u50cf\u306e\u6271\u3044<\/h2>\r\n\r\n<h3 class=\"fz-ml\">6-1. \u753b\u50cf\u306f\u7d76\u5bfe\u30d1\u30b9\uff08<code>https:\/\/<\/code>\uff09\u3067<\/h3>\r\n<p>\u76f8\u5bfe\u30d1\u30b9\u3067\u66f8\u304f\u3068\u3001\u30e1\u30fc\u30e9\u30fc\u306b\u3088\u3063\u3066\u306f\u6dfb\u4ed8\u30d5\u30a1\u30a4\u30eb\u6271\u3044\u306b\u306a\u3063\u305f\u308a\u3001\u5358\u306b\u8868\u793a\u3055\u308c\u306a\u304b\u3063\u305f\u308a\u3057\u307e\u3059\u3002<code>https:\/\/<\/code> \u304b\u3089\u59cb\u307e\u308b\u7d76\u5bfe\u30d1\u30b9\u3067\u66f8\u304d\u307e\u3059\u3002<\/p>\r\n\r\n<h3 class=\"fz-ml\">6-2. \u5e45\u306f <code>style=\"width:100%\"<\/code> \u3067\u6307\u5b9a\u3059\u308b<\/h3>\r\n<p><code>&lt;img width=\"680\"&gt;<\/code> \u306e\u3088\u3046\u306b\u5c5e\u6027\u3067\u6307\u5b9a\u3059\u308b\u3068\u3001\u30bb\u30eb\u306e\u5e45\u3084 <code>padding<\/code> \u3092\u5909\u3048\u308b\u305f\u3073\u306b\u6570\u5b57\u3092\u76f4\u3059\u3053\u3068\u306b\u306a\u3063\u3066\u3001\u8abf\u6574\u304c\u308f\u308a\u3068\u9762\u5012\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\r\n<pre><code class=\"language-html\">&lt;img\r\nsrc=\"https:\/\/i.gyazo.com\/e214c900d4d9ecda3e12e3e09e7f1e95.jpg\"\r\nalt=\"\u30cf\u30f3\u30c9\u30c9\u30ea\u30c3\u30d7\u3067\u30b3\u30fc\u30d2\u30fc\u3092\u6df9\u308c\u308b\u3001\u671d\u306e\u98df\u5353\"\r\nstyle=\"width:100%; display:inline-block; vertical-align:middle;\"\r\n\/&gt;<\/code><\/pre>\r\n<p><code>width:100%<\/code> \u306b\u3057\u3066\u304a\u3051\u3070\u3001\u89aa\u306e <code>&lt;td&gt;<\/code> \u306e\u5e45\u306b\u7d20\u76f4\u306b\u8ffd\u5f93\u3057\u307e\u3059\u3002<b class=\"fw-600\">2-5<\/b> \u306e\u30ab\u30e9\u30e0\u5206\u5272\u3067\u3082\u3001<br class=\"d-none_sp\" \/>\u30bb\u30eb\u3092 50% \u3084 33.33% \u306b\u3059\u308b\u3060\u3051\u3067\u4e2d\u8eab\u304c\u4ed8\u3044\u3066\u304d\u307e\u3059\u3002<\/p>\r\n\r\n<h3 class=\"fz-ml\">6-3. \u753b\u50cf\u306e\u7f6e\u304d\u5834\u6240<\/h3>\r\n<p class=\"mt-1r\">\u5b9f\u6848\u4ef6\u306a\u3089\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306e\u30b5\u30fc\u30d0\u30fc\u304b\u81ea\u5206\u306e\u30b5\u30fc\u30d0\u30fc\u306b\u7f6e\u304f\u306e\u304c\u78ba\u5b9f\u3060\u3068\u601d\u3044\u307e\u3059\u304c\u3001Web\u30b5\u30a4\u30c8\u3068\u9055\u3044\u4f55\u5e74\u3082\u540c\u3058\u753b\u50cf\u3092\u4f7f\u3044\u7d9a\u3051\u308bHTML\u30e1\u30fc\u30eb\u3068\u3044\u3046\u306e\u306f\u3042\u307e\u308a\u306a\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\r\n<p>\u30b5\u30f3\u30d7\u30eb\u3084\u8a18\u4e8b\u7528\u306a\u3089 <b class=\"fw-600\">Gyazo<\/b> \u304c\u624b\u8efd\u3067\u3044\u3044\u3067\u3059\u3002\u7121\u6599\u30d7\u30e9\u30f3\u3067\u3082\u76f4\u30ea\u30f3\u30af\u3067\u304d\u307e\u3059\u3002<\/p>\r\n\r\n<p class=\"mt-1r\">\u7121\u6599\u30d7\u30e9\u30f3\u306b\u306f\u300c\u753b\u50cf\u4e00\u89a7\u30da\u30fc\u30b8\u3067\u76f4\u8fd110\u679a\u3057\u304b\u898b\u3089\u308c\u306a\u3044\u300d\u3068\u3044\u3046\u5236\u9650\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u3053\u308c\u306f<b class=\"fw-600\">\u4e00\u89a7\u30da\u30fc\u30b8\u306e\u8a71<\/b>\u3067\u3001URL\u3055\u3048\u5206\u304b\u3063\u3066\u3044\u308c\u3070\u753b\u50cf\u306f\u8868\u793a\u3067\u304d\u307e\u3059\u3002Gyazo\u306e\u30d8\u30eb\u30d7\u306b\u3082\u3001\u7121\u6599\u30a2\u30ab\u30a6\u30f3\u30c8\u306e\u753b\u50cf\u304c\u524a\u9664\u3055\u308c\u305f\u308aURL\u304b\u3089\u30a2\u30af\u30bb\u30b9\u3067\u304d\u306a\u304f\u306a\u308b\u3053\u3068\u306f\u306a\u3044\u3001\u3068\u66f8\u3044\u3066\u3042\u308a\u307e\u3059\u3002\u30d6\u30ed\u30b0\u306b\u8cbc\u3063\u305f\u753b\u50cf\u304c\u898b\u3048\u306a\u304f\u306a\u308b\u3053\u3068\u3082\u306a\u3044\u3001\u3068\u306e\u3053\u3068\u3067\u3059\u3002<\/p>\r\n\r\n<p class=\"mt-1r\">Helpfeel Cosense\uff08\u65e7 Scrapbox\uff09\u3067\u753b\u50cf\u3092\u7ba1\u7406\u3057\u3066\u3044\u308b\u306a\u3089\u3001\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u5148\u3092 Gyazo \u306b\u5207\u308a\u66ff\u3048\u3066\u304a\u304f\u3068\u3044\u3044\u3068\u601d\u3044\u307e\u3059\u3002Cosense\u306f\u30c7\u30d5\u30a9\u30eb\u30c8\u3067 scrapbox.io \u306b\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3057\u307e\u3059\u304c\u3001\u30c9\u30e1\u30a4\u30f3\u304c cosen.se \u306b\u79fb\u884c\u4e2d\u3067\u3001\u65e7URL\u306f\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u3067\u52d5\u3044\u3066\u3044\u308b\u72b6\u614b\u3089\u3057\u3044\u3067\u3059\u3002\u30e1\u30fc\u30eb\u306b\u713c\u304d\u8fbc\u3080URL\u304c\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u983c\u307f\u306a\u306e\u306f\u907f\u3051\u305f\u3044\u3068\u3053\u308d\u3067\u3059\u3002<\/p>\r\n\r\n<picture class=\"bd-bounds mt-1r\"><img decoding=\"async\" src=\"https:\/\/code-plus.jp\/gp\/wp-content\/uploads\/scrapbox_2607151032.jpeg?ver=20260716131555\" alt=\"\" width=\"1253\" height=\"626\" class=\"alignnone size-full wp-image-13536\" \/><\/picture>\r\n<p>\uff08\u2191\u300eScrapbox\u300f\u3060\u3068\u3001\u7528\u9014\u5225\u3067\u306e\u753b\u50cf\u7ba1\u7406\u3082\u697d\uff09<\/p>\r\n\r\n<h3 class=\"fz-ml\">6-4. \u76f4\u30ea\u30f3\u30af\u306eURL\u306b\u6c17\u3092\u3064\u3051\u308b<\/h3>\r\n<p>Gyazo\u306e\u753b\u50cfURL\u306b\u306f2\u7a2e\u985e\u3042\u308a\u307e\u3059\u3002<\/p>\r\n<pre><code class=\"language-\">https:\/\/gyazo.com\/61e56c619fa473314019c4f829d285fa.png    \u2190 \u30da\u30fc\u30b8\u306eURL\r\nhttps:\/\/i.gyazo.com\/61e56c619fa473314019c4f829d285fa.png  \u2190 \u753b\u50cf\u306e\u76f4\u30ea\u30f3\u30af<\/code><\/pre>\r\n<p>\u30d6\u30e9\u30a6\u30b6\u3067\u958b\u304f\u3068\u3001\u524d\u8005\u3082\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u3055\u308c\u3066\u753b\u50cf\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002\u3060\u304b\u3089\u540c\u3058\u3082\u306e\u3060\u3068\u601d\u3063\u3066\u3057\u307e\u3046\u306e\u3067\u3059\u304c\u3001<b class=\"fw-600\">\u30e1\u30fc\u30e9\u30fc\u306e\u753b\u50cf\u30d7\u30ed\u30ad\u30b7\u304c\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u3092\u8ffd\u308f\u306a\u3044\u5834\u5408\u3001\u524d\u8005\u3060\u3068\u8868\u793a\u3055\u308c\u307e\u305b\u3093<\/b>\u3002<code>i.gyazo.com<\/code> \u306e\u307b\u3046\u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\r\n<p>\u30d6\u30e9\u30a6\u30b6\u3067\u78ba\u8a8d\u3057\u3066\u3044\u308b\u304b\u304e\u308a\u6c17\u3065\u304b\u306a\u3044\u985e\u306e\u8a71\u3067\u3001\u81ea\u5206\u3082\u3057\u3070\u3089\u304f\u524d\u8005\u3067\u66f8\u3044\u3066\u3044\u307e\u3057\u305f\u3002<\/p>\r\n\r\n<picture class=\"bd-bounds mt-1r\"><img decoding=\"async\" src=\"https:\/\/code-plus.jp\/gp\/wp-content\/uploads\/scrapbox_2607151033.jpg?ver=20260716131555\" alt=\"\" width=\"1314\" height=\"683\" class=\"alignnone size-full wp-image-13537\" \/><\/picture>\r\n\r\n<hr class=\"separator mt-3r\">\r\n\r\n<h2 class=\"fz-xl\">7. \u753b\u50cf\u304c\u8aad\u307f\u8fbc\u307e\u308c\u306a\u3044\u3068\u304d\u306e\u30d5\u30a9\u30fc\u30eb\u30d0\u30c3\u30af<\/h2>\r\n<p>\u300c\u753b\u50cf\u3092\u30d6\u30ed\u30c3\u30af\u3057\u3066\u3044\u308b\u30e1\u30fc\u30e9\u30fc\u300d\u3084\u300c\u753b\u50cfOFF\u3067\u8aad\u3093\u3067\u3044\u308b\u53d7\u4fe1\u8005\u300d\u3078\u306e\u5bfe\u7b56\u3067\u3059\u3002<\/p>\r\n\r\n<h3 class=\"fz-ml\">7-1. <code>alt<\/code> \u306e\u30d5\u30a9\u30f3\u30c8\u30b9\u30bf\u30a4\u30eb\u306f <code>&lt;img&gt;<\/code> \u306e\u89aa\u8981\u7d20\u3067\u6307\u5b9a\u3059\u308b<\/h3>\r\n<p><code>&lt;img&gt;<\/code> \u81ea\u4f53\u3067\u306f\u306a\u304f\u3001\u305d\u306e<b class=\"fw-600\">\u89aa\u8981\u7d20\u306b\u30d5\u30a9\u30f3\u30c8\u30b9\u30bf\u30a4\u30eb\u3092\u6307\u5b9a\u3059\u308b<\/b>\u3068\u3001alt\u8868\u793a\u6642\u306b\u3082\u53cd\u6620\u3055\u308c\u307e\u3059\u3002<\/p>\r\n<pre><code class=\"language-html\">&lt;h2 style=\"line-height:1.5; font-size:36px; font-weight:500; text-align:center;\"&gt;\r\n&lt;img\r\n  src=\"https:\/\/i.gyazo.com\/0e5d0ebe2cf625dfca38dff5fb3595f8.png\"\r\n  alt=\"\u898b\u51fa\u3057\u30c6\u30ad\u30b9\u30c8\"\r\n  style=\"width:100%; display:inline-block;\"\r\n\/&gt;\r\n&lt;\/h2&gt;<\/code><\/pre>\r\n\r\n<h3 class=\"fz-ml\">7-2. <code>alt<\/code> \u306e\u4e2d\u3067\u6539\u884c\u3059\u308b\uff08<code>&amp;#13;&amp;#10;<\/code>\uff09<\/h3>\r\n<pre><code class=\"language-html\">alt=\"1\u884c\u76ee\u306e\u30c6\u30ad\u30b9\u30c8&amp;#13;&amp;#10;2\u884c\u76ee\u306e\u30c6\u30ad\u30b9\u30c8\"<\/code><\/pre>\r\n\r\n<h3 class=\"fz-ml\">7-3. \u8aad\u307f\u8fbc\u307f\u5931\u6557\u6642\u306b\u4f59\u767d\u3092\u78ba\u4fdd\u3059\u308b\uff08<code>onerror<\/code>\uff09<\/h3>\r\n<p>\u753b\u50cf\u304c\u8868\u793a\u3055\u308c\u306a\u304b\u3063\u305f\u6642\u3001alt\u30c6\u30ad\u30b9\u30c8\u304c\u56db\u65b9\u306b\u8a70\u307e\u3063\u3066\u8aad\u307f\u306b\u304f\u304f\u306a\u308b\u306e\u3092\u9632\u304e\u307e\u3059\u3002<\/p>\r\n<pre><code class=\"language-html\">&lt;img\r\n  src=\"https:\/\/example.com\/image.png\"\r\n  alt=\"\u8aac\u660e\u30c6\u30ad\u30b9\u30c8\"\r\n  onerror=\"this.style.margin='15px auto 15px';\"\r\n\/&gt;<\/code><\/pre>\r\n\r\n<img decoding=\"async\" class=\"mt-1r\" src=\"https:\/\/code-plus.jp\/gp\/wp-content\/uploads\/htmail-sample1_tps.jpeg?ver=20260716131555\" alt=\"\" width=\"1179\" height=\"747\" class=\"alignnone size-full wp-image-13523\" \/>\r\n<p>\uff08\u2191\u753b\u50cf\u304c\u8868\u793a\u3055\u308c\u306a\u3044\u5834\u5408\u3082\u3001\u30d5\u30a9\u30f3\u30c8\u30b9\u30bf\u30a4\u30eb\u30fb\u6539\u884c\u30fb\u4f59\u767d\u306f\u6307\u5b9a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\uff09<\/p>\r\n\r\n<h3 class=\"fz-ml\">7-4. <code>alt<\/code> \u306e\u30b5\u30a4\u30ba\u306f <code>clamp()<\/code> \u3067\u6c7a\u3081\u308b<\/h3>\r\n<p><b class=\"fw-600\">7-1<\/b> \u3067\u89aa\u8981\u7d20\u306b\u30d5\u30a9\u30f3\u30c8\u30b5\u30a4\u30ba\u3092\u6307\u5b9a\u3057\u307e\u3057\u305f\u304c\u3001\u305d\u3053\u3092\u56fa\u5b9a\u5024\u3067\u306f\u306a\u304f <code>clamp()<\/code> \u3067\u66f8\u3044\u3066\u3044\u307e\u3059\u3002<\/p>\r\n\r\n<pre><code class=\"language-html\">&lt;h2 style=\"line-height:1.5; font-size:clamp(21px,3.6vw,36px); font-weight:500;\"&gt;\r\n  &lt;img src=\"...\" alt=\"...\" style=\"width:100%;\" \/&gt;\r\n&lt;\/h2&gt;<\/code><\/pre>\r\n\r\n<p>\u306a\u305c <code>@media<\/code> \u3067\u306f\u306a\u3044\u304b\u3068\u3044\u3046\u3068\u3001<code>@media<\/code> \u306f <code>&lt;head&gt;<\/code> \u306e <code>&lt;style&gt;<\/code> \u306b\u3057\u304b\u66f8\u3051\u306a\u3044\u304b\u3089\u3067\u3059\u3002<br \/><b class=\"fw-600\">2-3<\/b> \u306e\u3068\u304a\u308a\u3001\u305d\u306e <code>&lt;style&gt;<\/code> \u3092\u7121\u8996\u3059\u308b\u30e1\u30fc\u30e9\u30fc\u304c\u3042\u308a\u307e\u3059\u3002<code>clamp()<\/code> \u306f\u30a4\u30f3\u30e9\u30a4\u30f3\u306b\u66f8\u3051\u308b\u306e\u3067\u3001\u305d\u3053\u3092\u901a\u308a\u629c\u3051\u307e\u3059\u3002<\/p>\r\n\r\n<p>vw\u5024\u306e\u76ee\u5b89\u306f<b class=\"fw-600\">\u300c\u6700\u5927px \u00f7 10\u300d<\/b>\u3068\u3057\u307e\u3057\u305f\u30021000px\u306e\u5e45\u3067\u6700\u5927\u5024\u306b\u5230\u9054\u3059\u308b\u8a08\u7b97\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\r\n\r\n<table class=\"table my-0.5r\">\r\n  <thead>\r\n    <tr class=\"rung\">\r\n      <th>\u30bf\u30b0<\/th>\r\n      <td>\u6307\u5b9a<\/td>\r\n      <td>\u4e0b\u9650\u306b\u5230\u9054\u3059\u308b\u5e45<\/td>\r\n    <\/tr>\r\n  <\/thead>\r\n  <tbody>\r\n    <tr class=\"rung\">\r\n      <th>h1<\/th>\r\n      <td><code>clamp(15px, 3.6vw, 36px)<\/code><\/td>\r\n      <td>417px<\/td>\r\n    <\/tr>\r\n    <tr class=\"rung\">\r\n      <th>h2<\/th>\r\n      <td><code>clamp(21px, 3.6vw, 36px)<\/code><\/td>\r\n      <td>583px<\/td>\r\n    <\/tr>\r\n    <tr class=\"rung\">\r\n      <th>h3<\/th>\r\n      <td><code>clamp(18px, 3vw, 30px)<\/code><\/td>\r\n      <td>600px<\/td>\r\n    <\/tr>\r\n    <tr class=\"rung\">\r\n      <th>h4<\/th>\r\n      <td><code>clamp(14px, 2.4vw, 24px)<\/code><\/td>\r\n      <td>583px<\/td>\r\n    <\/tr>\r\n    <tr class=\"rung\">\r\n      <th>h5<\/th>\r\n      <td><code>clamp(13px, 2.1vw, 21px)<\/code><\/td>\r\n      <td>619px<\/td>\r\n    <\/tr>\r\n    <tr class=\"rung\">\r\n      <th>h6<\/th>\r\n      <td><code>clamp(13px, 2.1vw, 21px)<\/code><\/td>\r\n      <td>619px<\/td>\r\n    <\/tr>\r\n  <\/tbody>\r\n<\/table>\r\n\r\n<blockquote class=\"alert my-0.5r\">\r\n  <p><b class=\"fw-600\">\u3053\u308c\u306f\u898b\u51fa\u3057\u968e\u5c64\u306e\u30b5\u30a4\u30ba\u8868\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/b><br>h1 \u304c h2 \u3088\u308a\u5c0f\u3055\u3044\u306e\u306f\u3001h1 \u306b\u5165\u308b\u30c6\u30ad\u30b9\u30c8\u306e\u307b\u3046\u304c\u9577\u304f\u306a\u308b\u304b\u3089\u3067\u3059\uff087-5 \u53c2\u7167\uff09\u3002<br class=\"d-none_sp\" \/>\u5404\u30bf\u30b0\u306b\u5165\u308b<b class=\"fw-600\">\u753b\u50cf\u306e\u5927\u304d\u3055\u306b\u5408\u308f\u305b\u3066\u500b\u5225\u306b\u6c7a\u3081\u3066\u3044\u308b<\/b>\u306e\u3067\u3001h1 &gt; h2 &gt; h3 \u3068\u3044\u3046\u4e26\u3073\u306b\u306f\u306a\u308a\u307e\u305b\u3093\u3002<\/p>\r\n<\/blockquote>\r\n\r\n<p class=\"mt-1r\">h1 \u3068 h2 \u306f\u3001vw\u5024\u3082\u6700\u5927\u5024\u3082\u540c\u3058\u3067\u3001<b class=\"fw-600\">\u9055\u3046\u306e\u306f\u4e0b\u9650\u3060\u3051<\/b>\u306b\u3057\u3066\u3042\u308a\u307e\u3059\u3002583px\u3092\u5207\u3063\u305f\u3068\u3053\u308d\u3067 h2 \u306f21px\u3067\u6b62\u307e\u308a\u3001h1 \u306f\u305d\u3053\u304b\u308915px\u307e\u3067\u6c88\u307f\u7d9a\u3051\u307e\u3059\u3002\u300ch1\u306e\u307b\u3046\u304c\u6587\u7ae0\u91cf\u304c\u591a\u3044\u306e\u3067\u3001\u72ed\u3044\u5e45\u3067\u306f\u3082\u3063\u3068\u7e2e\u3093\u3067\u307b\u3057\u3044\u300d\u3068\u3044\u3046\u8981\u6c42\u3092\u3001\u4e0b\u9650\u5024\u3072\u3068\u3064\u3067\u8868\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\r\n<p>\u4e0b\u9650\u306f\u6bd4\u4f8b\u8a08\u7b97\u3067\u306f\u306a\u304f\u3001<b class=\"fw-600\">\u8aad\u3081\u308b\u5927\u304d\u3055\u306e\u5e8a<\/b>\u3068\u3057\u3066\u6c7a\u3081\u307e\u3059\u3002\u4e0b\u3052\u3059\u304e\u308b\u3068\u8aad\u3081\u307e\u305b\u3093\u3002<\/p>\r\n\r\n<p class=\"mt-1r\">\u306a\u304a\u3001<code>clamp()<\/code> \u3084 <code>vw<\/code> \u3092\u89e3\u3055\u306a\u3044\u30e1\u30fc\u30e9\u30fc\u306f\u591a\u3044\u3067\u3059\u304c\uff08Gmail\u3001Yahoo!\u30e1\u30fc\u30eb\u3001Outlook\u3042\u305f\u308a\uff09\u3001\u305d\u306e\u5834\u5408\u306f\u3053\u306e\u6307\u5b9a\u3054\u3068\u7121\u8996\u3055\u308c\u3066\u3001\u30e1\u30fc\u30e9\u30fc\u65e2\u5b9a\u306e\u898b\u51fa\u3057\u30b5\u30a4\u30ba\u3067\u8868\u793a\u3055\u308c\u308b\u3060\u3051\u306b\u306a\u308a\u307e\u3059\u3002alt\u8868\u793a\u306b\u3057\u304b\u95a2\u308f\u3089\u306a\u3044\u306e\u3067\u5b9f\u5bb3\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\r\n\r\n<p>\u305d\u3057\u3066\u3001<code>clamp()<\/code> \u304c\u52b9\u304f\u5834\u6240\u306f\u3061\u3083\u3093\u3068\u3042\u308a\u307e\u3059\u3002\u5192\u982d\u306b\u7f6e\u304f\u300c\u3046\u307e\u304f\u8868\u793a\u3055\u308c\u306a\u3044\u5834\u5408\u306f\u3053\u3061\u3089\u300d\u306e\u9077\u79fb\u5148\u306f\u30d6\u30e9\u30a6\u30b6\u3060\u304b\u3089\u3067\u3059\u3002\u3053\u308c\u306f\u8ca0\u3051\u60dc\u3057\u307f\u306e\u8a71\u3067\u306f\u306a\u304f\u3066\u3001\u305d\u3082\u305d\u3082\u3053\u306eHTML\u306f<b class=\"fw-600\">\u30e1\u30fc\u30eb\u3068Web\u30da\u30fc\u30b8\u306e\u4e21\u65b9\u3068\u3057\u3066\u914d\u4fe1\u3059\u308b\u3082\u306e<\/b>\u3067\u3059\u3002\u8a73\u3057\u304f\u306f <b class=\"fw-600\">8<\/b> \u306b\u66f8\u304d\u307e\u3059\u3002<\/p>\r\n\r\n<p>HTML\u30e1\u30fc\u30eb\u3067 <code>clamp()<\/code> \u3092\u4f7f\u3063\u3066\u3044\u308b\u4f8b\u306f\u3042\u307e\u308a\u898b\u304b\u3051\u307e\u305b\u3093\u304c\u3001\u30ec\u30ac\u30b7\u30fc\u306a\u66f8\u304d\u65b9\u3057\u304b\u3067\u304d\u306a\u3044\u524d\u63d0\u306e\u4e2d\u3067\u3001\u30a4\u30f3\u30e9\u30a4\u30f3\u306b\u66f8\u3051\u3066\u3001\u52b9\u304b\u306a\u3044\u74b0\u5883\u3067\u3082\u5bb3\u304c\u306a\u3044\u3001\u3068\u3044\u3046\u6761\u4ef6\u3092\u6e80\u305f\u3059\u30d1\u30bf\u30fc\u30f3\u3067\u3059\u3002<\/p>\r\n\r\n<blockquote class=\"alert my-0.5r\">\r\n  <p>\u3053\u3053\u3067 <code>clamp()<\/code> \u3092\u4f7f\u3046\u306e\u306f<b class=\"fw-600\">\u753b\u50cf\u3092\u542b\u3080\u898b\u51fa\u3057\u30bf\u30b0\u3060\u3051<\/b>\u3067\u3059\u3002\u753b\u50cf\u3092\u542b\u307e\u306a\u3044\u30e9\u30a4\u30d6\u30c6\u30ad\u30b9\u30c8\uff08<code>p<\/code> \u3084 <code>small<\/code>\uff09\u306f\u3001\u7d20\u76f4\u306b\u56fa\u5b9apx\u3067\u66f8\u3044\u3066\u3044\u307e\u3059\u3002alt\u4ee3\u66ff\u30c6\u30ad\u30b9\u30c8\u306e\u305f\u3081\u306e\u4ed5\u7d44\u307f\u306a\u306e\u3067\u3001\u305d\u3053\u306b\u63c3\u3048\u308b\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\r\n<\/blockquote>\r\n\r\n<h3 class=\"fz-ml\">7-5. h1 \u306f\u30c6\u30ad\u30b9\u30c8\u3067\u66f8\u304f<\/h3>\r\n<p><b class=\"fw-600\">5-3<\/b> \u3067\u300c\u91cd\u8981\u306a\u60c5\u5831\u306f\u753b\u50cf\u306b\u3059\u308b\u300d\u3068\u66f8\u304d\u307e\u3057\u305f\u304c\u3001<b class=\"fw-600\">\u6700\u521d\u304b\u3089\u6700\u5f8c\u307e\u3067\u753b\u50cf\u3060\u3068\u3001<br class=\"d-none_sp\" \/>\u53d7\u4fe1\u7bb1\u306e\u4e00\u89a7\u306b\u51fa\u308b\u629c\u7c8b\u306b\u4f55\u3082\u30c6\u30ad\u30b9\u30c8\u304c\u8868\u793a\u3055\u308c\u307e\u305b\u3093<\/b>\u3002\u3053\u308c\u306f\u5b9f\u969b\u306b\u78ba\u8a8d\u3057\u307e\u3057\u305f\u3002<\/p>\r\n\r\n<p>\u306a\u306e\u3067\u3001h1 \u3060\u3051\u306f\u30c6\u30ad\u30b9\u30c8\u3067\u66f8\u304d\u307e\u3059\u3002\u30d8\u30c3\u30c0\u30fc\u306e\u30ed\u30b4\u753b\u50cf\u306e\u3059\u3050\u4e0b\u3042\u305f\u308a\u306b\u30011\u56de\u3060\u3051\u7f6e\u304d\u307e\u3059\u3002\u3042\u3044\u3055\u3064\u6587\u3092\u30c6\u30ad\u30b9\u30c8\u3067\u66f8\u3044\u3066\u3044\u308b\u306e\u3082\u540c\u3058\u7406\u7531\u3067\u3059\u3002<\/p>\r\n\r\n<pre><code class=\"language-html\">&lt;td style=\"background:#2E211B; text-align:center;\"&gt;\r\n  &lt;h1 style=\"line-height:1.5; font-size:clamp(15px,3.6vw,36px); font-weight:700; color:#FFFFFF;\"&gt;\r\n  \u3010PING PONG NIGHT 2026\u3011&lt;br \/&gt;\u524d\u56de\u3001\u5927\u3044\u306b\u76db\u308a\u4e0a\u304c\u3063\u305f&lt;br \/&gt;\u3042\u306e\u30a4\u30d9\u30f3\u30c8\u304c\u5e30\u3063\u3066\u304d\u307e\u3059\uff01\r\n  &lt;\/h1&gt;\r\n&lt;\/td&gt;<\/code><\/pre>\r\n\r\n<p>\u6fc3\u3044\u8272\u306e\u5e2f\u306e\u4e0a\u306b\u767d\u6587\u5b57\u3067\u7f6e\u3051\u3070\u3001<b class=\"fw-600\">5-2<\/b> \u306e\u30b0\u30ec\u30fc\u30c6\u30ad\u30b9\u30c8\u306e\u30cf\u30c3\u30af\u3082\u8981\u308a\u307e\u305b\u3093\u3057\u3001\u30c7\u30b6\u30a4\u30f3\u3068\u3057\u3066\u3082\u666e\u901a\u306b\u6210\u7acb\u3057\u307e\u3059\u3002\u30c6\u30ad\u30b9\u30c8\u306b\u3057\u305f\u305b\u3044\u3067\u898b\u305f\u76ee\u304c\u72a0\u7272\u306b\u306a\u308b\u3001\u3068\u3044\u3046\u3053\u3068\u306b\u306f\u306a\u308a\u307e\u305b\u3093\u3002<\/p>\r\n\r\n<p class=\"mt-1r\">h1 \u306f\u4ef6\u540d\u3068\u4f3c\u305f\u5185\u5bb9\u306b\u306a\u308b\u306e\u3067\u3001\u6587\u7ae0\u91cf\u304c\u591a\u304f\u306a\u308a\u304c\u3061\u3067\u3059\u3002\u5e45\u304c\u5e83\u3044\u3068\u304d\u306f\u4f59\u88d5\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u72ed\u304f\u306a\u308b\u3068\u53ce\u307e\u3089\u306a\u304f\u306a\u3063\u3066\u304d\u307e\u3059\u3002<b class=\"fw-600\">7-4<\/b> \u3067 h1 \u306e\u4e0b\u9650\u309215px\u307e\u3067\u4e0b\u3052\u3066\u3044\u308b\u306e\u306f\u3053\u306e\u305f\u3081\u3067\u3059\u3002iPhone XR\uff08414px\uff09\u3060\u3068 <code>3.6vw = 14.9px<\/code> \u306a\u306e\u3067\u3001\u3061\u3087\u3046\u3069\u4e0b\u9650\u306e15px\u3067\u6b62\u307e\u308a\u307e\u3059\u3002<\/p>\r\n\r\n<h3 class=\"fz-ml\">7-6. \u30d7\u30ea\u30d8\u30c3\u30c0\u30fc\u3067\u3001\u30d7\u30ec\u30d3\u30e5\u30fc\u306b\u51fa\u3059\u6587\u5b57\u3092\u6307\u5b9a\u3059\u308b<\/h3>\r\n\r\n<p>\u53d7\u4fe1\u7bb1\u306e\u4e00\u89a7\u306b\u306f\u3001\u4ef6\u540d\u306e\u4e0b\u306b\u30e1\u30fc\u30eb\u306e\u4e2d\u8eab\u304c\u5c11\u3057\u8868\u793a\u3055\u308c\u307e\u3059\u3002\u3042\u308c\u3092\u6307\u5b9a\u3067\u304d\u307e\u3059\u3002<\/p>\r\n\r\n<pre><code class=\"language-html\">&lt;body&gt;\r\n&lt;center&gt;\r\n\r\n  &lt;!-- Visually Hidden Preheader Text --&gt;\r\n  &lt;div style=\"max-height:0; overflow:hidden; mso-hide:all;\" aria-hidden=\"true\"&gt;\r\n    \u65ec\u306e\u30b7\u30f3\u30b0\u30eb\u30aa\u30ea\u30b8\u30f3\u304c\u5165\u8377\u3057\u307e\u3057\u305f\u3002\u304d\u307b\u3093\u306e\u30cf\u30f3\u30c9\u30c9\u30ea\u30c3\u30d7\u306e\u6df9\u308c\u65b9\u3082\u3054\u7d39\u4ecb\u3057\u307e\u3059\u3002\u4eca\u6708\u306e\u30e9\u30a4\u30f3\u30ca\u30c3\u30d7\u306f THE BAG \/ EASY DRIP \/ THE MUG \u306e3\u70b9\u3067\u3059\u3002\r\n  &lt;\/div&gt;<\/code><\/pre>\r\n\r\n<p>\u3053\u308c\u3092 <code>&lt;body&gt;<\/code> \u306e\u76f4\u5f8c\u306b\u7f6e\u304f\u3068\u3001\u30d7\u30ec\u30d3\u30e5\u30fc\u306b\u3053\u306e\u30c6\u30ad\u30b9\u30c8\u304c\u51fa\u307e\u3059\u3002<b class=\"fw-600\">\u672c\u6587\u306b\u306f\u8868\u793a\u3055\u308c\u307e\u305b\u3093\u3002<\/b>Mac\u30e1\u30fc\u30eb\u3001eM Client\u3001Android\u7248\u306eYahoo!\u30e1\u30fc\u30eb\u30fbGmail\u30fbOutlook\u306e5\u74b0\u5883\u3067\u78ba\u8a8d\u3057\u307e\u3057\u305f\u3002<\/p>\r\n\r\n<p>\u3053\u306e <code>&lt;div&gt;<\/code> \u304c <code>display:none<\/code> \u3092\u4f7f\u308f\u305a\u3001<code>max-height:0<\/code> \u3068 <code>overflow:hidden<\/code> \u3067\u6f70\u3057\u3066\u3044\u308b\u306e\u304c\u30dd\u30a4\u30f3\u30c8\u3067\u3059\u3002\u7406\u7531\u306f\u4e0b\u306b\u66f8\u304d\u307e\u3059\u3002<\/p>\r\n\r\n<h4 class=\"fz-md\">\u6307\u5b9a\u3057\u306a\u3044\u3068\u3001\u4e0a\u304b\u3089\u9806\u306b\u62fe\u308f\u308c\u308b<\/h4>\r\n\r\n<p>\u30d7\u30ea\u30d8\u30c3\u30c0\u30fc\u3092\u7f6e\u304b\u306a\u3044\u3068\u3069\u3046\u306a\u308b\u304b\u3002\u5b9f\u969b\u306e\u30d7\u30ec\u30d3\u30e5\u30fc\u304c\u3053\u308c\u3067\u3059\u3002<\/p>\r\n\r\n<pre><code class=\"language-\">\u3010ROAST JOURNAL\u30112026.07 VOL.07 \uff5c \u65ec\u306e\u30b7\u30f3\u30b0\u30eb\u30aa\u30ea\u30b8\u30f3\u5165\u8377\uff0f\u304d\u307b\u3093\u306e\u30cf\u30f3\u30c9\u30c9\u30ea\u30c3\u30d7\u7279\u96c6\r\nHTML\u30e1\u30fc\u30eb\u304c\u3046\u307e\u304f\u8868\u793a\u3055\u308c\u306a\u3044\u5834\u5408\u306f \u3053\u3061\u3089 \u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002 2026.07 \/ VOL.07\r\nSEASONAL COFFEE, STORIES & BREW GUIDES \u25cb\u25cb\u25cb\u69d8 \u303c\u303c\u303c\u303c\u303c\u303c\u303c \u303c\u303c\u303c\u303c\u303c\u303c\u3002 \u303c\u303c\u303c\u303c\u303c\u303c\u303c \u2026<\/code><\/pre>\r\n\r\n<p>1\u884c\u76ee\u304c\u4ef6\u540d\u3067\u3001\u305d\u306e\u3042\u3068\u306f\u672c\u6587\u306e<b class=\"fw-600\">\u30e9\u30a4\u30d6\u30c6\u30ad\u30b9\u30c8\u304c\u4e0a\u304b\u3089\u9806\u306b<\/b>\u4e26\u3093\u3067\u3044\u307e\u3059\u3002\u300cHTML\u30e1\u30fc\u30eb\u304c\u3046\u307e\u304f\u8868\u793a\u3055\u308c\u306a\u3044\u5834\u5408\u306f\u301c\u300d\uff08\u5192\u982d\u306e <code>small<\/code>\uff09\u3001\u300c2026.07 \/ VOL.07 SEASONAL COFFEE\u2026\u300d\uff08\u30d8\u30c3\u30c0\u30fc\u306e <code>small<\/code>\uff09\u3001\u300c\u25cb\u25cb\u25cb\u69d8 \u303c\u303c\u303c\u2026\u300d\uff08\u3042\u3044\u3055\u3064\u6587\u306e <code>p<\/code>\uff09\u306e\u9806\u3067\u3059\u3002<\/p>\r\n\r\n<p>\u30d7\u30ea\u30d8\u30c3\u30c0\u30fc\u3092\u7f6e\u304f\u3068\u3001\u3053\u306e\u5148\u982d\u306b\u6307\u5b9a\u3057\u305f\u30c6\u30ad\u30b9\u30c8\u304c\u5165\u308a\u307e\u3059\u3002<\/p>\r\n\r\n<pre><code class=\"language-\">\u3010ROAST JOURNAL\u30112026.07 VOL.07 \uff5c \u65ec\u306e\u30b7\u30f3\u30b0\u30eb\u30aa\u30ea\u30b8\u30f3\u5165\u8377\uff0f\u304d\u307b\u3093\u306e\u30cf\u30f3\u30c9\u30c9\u30ea\u30c3\u30d7\u7279\u96c6\r\n\u65ec\u306e\u30b7\u30f3\u30b0\u30eb\u30aa\u30ea\u30b8\u30f3\u304c\u5165\u8377\u3057\u307e\u3057\u305f\u3002\u304d\u307b\u3093\u306e\u30cf\u30f3\u30c9\u30c9\u30ea\u30c3\u30d7\u306e\u6df9\u308c\u65b9\u3082\u3054\u7d39\u4ecb\u3057\u307e\u3059\u3002\u4eca\u6708\u306e\r\n\u30e9\u30a4\u30f3\u30ca\u30c3\u30d7\u306f THE BAG \/ EASY DRIP \/ THE MUG \u306e3\u70b9\u3067\u3059\u3002 HTML\u30e1\u30fc\u30eb\u304c\u3046\u307e\u304f\u8868\u793a\u3055\u308c\u306a\u3044\u5834\u5408\u306f\u2026<\/code><\/pre>\r\n\r\n<p>\u30d7\u30ec\u30d3\u30e5\u30fc\u306b\u8868\u793a\u3055\u308c\u308b\u6587\u5b57\u6570\u306f\u305d\u3046\u591a\u304f\u306a\u3044\u306e\u3067\u300180\u6587\u5b57\u7a0b\u5ea6\u66f8\u3044\u3066\u304a\u3051\u3070\u3001\u305d\u306e\u3042\u3068\u306e\u300cHTML\u30e1\u30fc\u30eb\u304c\u3046\u307e\u304f\u8868\u793a\u3055\u308c\u306a\u3044\u5834\u5408\u306f\u301c\u300d\u306f\u307b\u307c\u898b\u3048\u306a\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\r\n\r\n<hr class=\"separator mt-3r\">\r\n\r\n<h2 class=\"fz-xl\">8. HTML\u30e1\u30fc\u30eb\u306f\u3001Web\u30da\u30fc\u30b8\u3067\u3082\u3042\u308b<\/h2>\r\n\r\n<p>\u3053\u3053\u307e\u3067\u300c\u30e1\u30fc\u30e9\u30fc\u3067\u306f\u52b9\u304b\u306a\u3044\u300d\u3082\u306e\u3092\u3044\u304f\u3064\u304b\u6319\u3052\u3066\u304d\u307e\u3057\u305f\u3002<code>clamp()<\/code>\u3001<code>@media<\/code>\u3001<code>&lt;head&gt;<\/code> \u306e <code>&lt;style&gt;<\/code>\u3001<code>&lt;meta name=\"description\"&gt;<\/code>\u3002<\/p>\r\n\r\n<p>\u305f\u3060\u3001HTML\u30e1\u30fc\u30eb\u306b\u306f\u305f\u3044\u3066\u3044\u3001\u5192\u982d\u306b\u3053\u306e1\u884c\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\r\n\r\n<pre><code class=\"language-html\">&lt;small&gt;HTML\u30e1\u30fc\u30eb\u304c\u3046\u307e\u304f\u8868\u793a\u3055\u308c\u306a\u3044\u5834\u5408\u306f &lt;a href=\"https:\/\/example.com\/htmail\/202607.html\"&gt;\u3053\u3061\u3089&lt;\/a&gt; \u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002&lt;\/small&gt;<\/code><\/pre>\r\n\r\n<p>\u3053\u306e\u9077\u79fb\u5148\u306f\u30d6\u30e9\u30a6\u30b6\u3067\u3059\u3002\u3064\u307e\u308a<b class=\"fw-600\">\u540c\u3058HTML\u304c\u3001\u53d7\u4fe1\u7bb1\u3068\u30d6\u30e9\u30a6\u30b6\u306e\u4e21\u65b9\u3067\u8aad\u307e\u308c\u307e\u3059<\/b>\u3002<\/p>\r\n\r\n<p>\u3053\u308c\u3092\u300c\u30e1\u30fc\u30e9\u30fc\u3067\u99c4\u76ee\u3060\u3063\u305f\u3068\u304d\u306e\u9003\u3052\u5834\u300d\u3068\u8003\u3048\u305a\u3001<b class=\"fw-600\">2\u3064\u76ee\u306e\u914d\u4fe1\u5148<\/b>\u3068\u8003\u3048\u308b\u3068\u8a71\u304c\u5909\u308f\u308a\u307e\u3059\u3002\u30e1\u30eb\u30de\u30ac\u3068\u3057\u3066\u914d\u4fe1\u3057\u3066\u3044\u308b\u3082\u306e\u3092\u3001\u540c\u3058\u5185\u5bb9\u3067\u30b5\u30a4\u30c8\u306e\u30c8\u30d4\u30c3\u30af\u30b9\u4e00\u89a7\u306b\u3082\u4e26\u3079\u308b\u30021\u3064\u4f5c\u308c\u30702\u304b\u6240\u3067\u4f7f\u3048\u308b\u3002\u5b9f\u969b\u3001\u305d\u3046\u3044\u3046\u904b\u7528\u3092\u3057\u3066\u3044\u308b\u3068\u3053\u308d\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u3046\u8003\u3048\u308b\u3068\u3001Web\u30da\u30fc\u30b8\u3068\u3057\u3066\u306e\u60c5\u5831\u3082\u6301\u305f\u305b\u3066\u304a\u304f\u3079\u304d\u3067\u3059\u3002<\/p>\r\n\r\n<h3 class=\"fz-ml\">8-1. title \/ meta description \/ OGP \u3092\u66f8\u3044\u3066\u304a\u304f<\/h3>\r\n\r\n<pre><code class=\"language-html\">&lt;title&gt;\u3010ROAST JOURNAL\u30112026.07 VOL.07 \uff5c \u65ec\u306e\u30b7\u30f3\u30b0\u30eb\u30aa\u30ea\u30b8\u30f3\u5165\u8377\uff0f\u304d\u307b\u3093\u306e\u30cf\u30f3\u30c9\u30c9\u30ea\u30c3\u30d7\u7279\u96c6&lt;\/title&gt;\r\n&lt;meta name=\"description\" content=\"\u65ec\u306e\u30b7\u30f3\u30b0\u30eb\u30aa\u30ea\u30b8\u30f3\u304c\u5165\u8377\u3057\u307e\u3057\u305f\u3002\u304d\u307b\u3093\u306e\u30cf\u30f3\u30c9\u30c9\u30ea\u30c3\u30d7\u306e\u6df9\u308c\u65b9\u3082\u3054\u7d39\u4ecb\u3057\u307e\u3059\u3002\u2026\"&gt;\r\n&lt;link rel=\"canonical\" href=\"https:\/\/example.com\/htmail\/202607.html\"&gt;\r\n\r\n&lt;!-- Open Graph \/ Facebook --&gt;\r\n&lt;meta property=\"og:type\" content=\"article\"&gt;\r\n&lt;meta property=\"og:url\" content=\"https:\/\/example.com\/htmail\/202607.html\"&gt;\r\n&lt;meta property=\"og:title\" content=\"\u3010ROAST JOURNAL\u30112026.07 VOL.07 \uff5c \u2026\"&gt;\r\n&lt;meta property=\"og:description\" content=\"\u65ec\u306e\u30b7\u30f3\u30b0\u30eb\u30aa\u30ea\u30b8\u30f3\u304c\u5165\u8377\u3057\u307e\u3057\u305f\u3002\u2026\"&gt;\r\n&lt;meta property=\"og:image\" content=\"https:\/\/i.gyazo.com\/e214c900d4d9ecda3e12e3e09e7f1e95.jpg\"&gt;\r\n\r\n&lt;!-- Twitter\uff08X\uff09\uff1atwitter:* \u306f property \u3067\u306f\u306a\u304f name \u3067\u6307\u5b9a\u3059\u308b --&gt;\r\n&lt;meta name=\"twitter:card\" content=\"summary_large_image\"&gt;\r\n&lt;meta name=\"twitter:title\" content=\"\u3010ROAST JOURNAL\u30112026.07 VOL.07 \uff5c \u2026\"&gt;\r\n&lt;meta name=\"twitter:description\" content=\"\u65ec\u306e\u30b7\u30f3\u30b0\u30eb\u30aa\u30ea\u30b8\u30f3\u304c\u5165\u8377\u3057\u307e\u3057\u305f\u3002\u2026\"&gt;\r\n&lt;meta name=\"twitter:image\" content=\"https:\/\/i.gyazo.com\/e214c900d4d9ecda3e12e3e09e7f1e95.jpg\"&gt;<\/code><\/pre>\r\n\r\n<p>\u30e1\u30fc\u30e9\u30fc\u306f\u3053\u308c\u3089\u3092\u5168\u90e8\u7121\u8996\u3057\u307e\u3059\u3002\u305d\u308c\u3067\u3044\u3044\u306e\u3067\u3059\u3002\u30d6\u30e9\u30a6\u30b6\u3067\u958b\u304b\u308c\u305f\u3068\u304d\u3001\u691c\u7d22\u7d50\u679c\u306b\u51fa\u305f\u3068\u304d\u3001SNS\u3067\u5171\u6709\u3055\u308c\u305f\u3068\u304d\u306b\u52b9\u304d\u307e\u3059\u3002<b class=\"fw-600\">\u30c7\u30e1\u30ea\u30c3\u30c8\u3082\u7279\u306b\u3042\u308a\u307e\u305b\u3093\u3002<\/b><\/p>\r\n<p><b class=\"fw-600\">6-1<\/b> \u3067\u300c\u753b\u50cf\u306f\u7d76\u5bfe\u30d1\u30b9\u3067\u300d\u3068\u6c7a\u3081\u305f\u306e\u3067\u3001\u30e1\u30fc\u30eb\u7528\u306b\u7f6e\u3044\u305f\u753b\u50cf\u304c\u305d\u306e\u307e\u307e\u4f7f\u3048\u307e\u3059\u3002<\/p>\r\n\r\n<h3 class=\"fz-ml\">8-2. \u3053\u306e1\u901a\u3092\u4ee3\u8868\u3059\u308b\u30c6\u30ad\u30b9\u30c8\u306f\u30015\u304b\u6240\u306b\u51fa\u308b<\/h3>\r\n\r\n<p>\u6574\u7406\u3059\u308b\u3068\u3001\u3053\u3046\u306a\u308a\u307e\u3059\u3002<\/p>\r\n\r\n<table class=\"table my-0.5r\">\r\n  <thead>\r\n    <tr class=\"rung\">\r\n      <th>\u51fa\u308b\u5834\u6240<\/th>\r\n      <td>\u4f55\u3067\u6307\u5b9a\u3059\u308b\u304b<\/td>\r\n      <td>\u30e1\u30fc\u30eb<\/td>\r\n      <td>\u30d6\u30e9\u30a6\u30b6<\/td>\r\n    <\/tr>\r\n  <\/thead>\r\n  <tbody>\r\n    <tr class=\"rung\">\r\n      <th>\u53d7\u4fe1\u7bb1\u306e\u4ef6\u540d<\/th>\r\n      <td>\u30e1\u30fc\u30e9\u30fc\uff0f\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u306e\u4ef6\u540d\u6b04<\/td>\r\n      <td>\u25ef<\/td>\r\n      <td>\u2212<\/td>\r\n    <\/tr>\r\n    <tr class=\"rung\">\r\n      <th>\u53d7\u4fe1\u7bb1\u306e\u30d7\u30ec\u30d3\u30e5\u30fc<\/th>\r\n      <td>Visually Hidden Preheader Text<\/td>\r\n      <td>\u25ef<\/td>\r\n      <td>\uff08\u975e\u8868\u793a\uff09<\/td>\r\n    <\/tr>\r\n    <tr class=\"rung\">\r\n      <th>\u30d6\u30e9\u30a6\u30b6\u306e\u30bf\u30d6<\/th>\r\n      <td><code>&lt;title&gt;<\/code><\/td>\r\n      <td>\u00d7<\/td>\r\n      <td>\u25ef<\/td>\r\n    <\/tr>\r\n    <tr class=\"rung\">\r\n      <th>\u691c\u7d22\u7d50\u679c<\/th>\r\n      <td><code>&lt;meta name=\"description\"&gt;<\/code><\/td>\r\n      <td>\u00d7<\/td>\r\n      <td>\u25ef<\/td>\r\n    <\/tr>\r\n    <tr class=\"rung\">\r\n      <th>SNS\u306e\u30ab\u30fc\u30c9<\/th>\r\n      <td>OGP<\/td>\r\n      <td>\u00d7<\/td>\r\n      <td>\u25ef<\/td>\r\n    <\/tr>\r\n  <\/tbody>\r\n<\/table>\r\n\r\n<h3 class=\"fz-ml\">8-3. Web\u30d5\u30a9\u30f3\u30c8\u3082\u3001\u3053\u3053\u3067\u52b9\u3044\u3066\u3044\u307e\u3059<\/h3>\r\n\r\n<p>\u30b5\u30f3\u30d7\u30eb\u3067\u306f <code>&lt;head&gt;<\/code> \u3067Web\u30d5\u30a9\u30f3\u30c8\u3092\u8aad\u307f\u8fbc\u3093\u3067\u3044\u307e\u3059\u3002<\/p>\r\n\r\n<pre><code class=\"language-html\">&lt;link rel=\"stylesheet\" href=\"https:\/\/cdn.jsdelivr.net\/npm\/yakuhanjp@4.0.0\/dist\/css\/yakuhanmp.css\" \/&gt;\r\n&lt;link rel=\"stylesheet\" href=\"https:\/\/unpkg.com\/@sarap422\/font-shippori-mincho-otf@1.0.0\/font-face.css\" \/&gt;<\/code><\/pre>\r\n\r\n<p>\u591a\u304f\u306e\u30e1\u30fc\u30e9\u30fc\u306f\u3053\u308c\u3092\u7121\u8996\u3057\u3066\u3001\u65e2\u5b9a\u306e\u30d5\u30a9\u30f3\u30c8\u3067\u8868\u793a\u3057\u307e\u3059\u3002\u305d\u308c\u3067\u3082\u66f8\u3044\u3066\u3042\u308b\u306e\u306f\u3001<code>clamp()<\/code> \u3068\u540c\u3058\u7406\u7531\u3067\u3059\u3002\u30d6\u30e9\u30a6\u30b6\u3067\u958b\u304b\u308c\u305f\u3068\u304d\u306b\u52b9\u304d\u307e\u3059\u3002<\/p>\r\n\r\n<hr class=\"separator mt-3r\">\r\n\r\n<h2 class=\"fz-xl\">9. \u5236\u4f5c\u4e0a\u306e\u6ce8\u610f\u70b9\u307e\u3068\u3081<\/h2>\r\n<table class=\"table my-0.5r\">\r\n  <thead>\r\n    <tr class=\"rung\">\r\n      <th>\u9805\u76ee<\/th>\r\n      <td>\u63a8\u5968<\/td>\r\n      <td>\u7406\u7531<\/td>\r\n    <\/tr>\r\n  <\/thead>\r\n  <tbody>\r\n    <tr class=\"rung\">\r\n      <th>CSS Reset<\/th>\r\n      <td>Cerberus\uff08MIT\uff09<\/td>\r\n      <td>\u69cb\u9020\u304c\u30b7\u30f3\u30d7\u30eb\u3067\u3001Gmail\u30cf\u30c3\u30af\u304c\u5165\u3063\u3066\u3044\u308b<\/td>\r\n    <\/tr>\r\n    <tr class=\"rung\">\r\n      <th>\u5e45<\/th>\r\n      <td><code>max-width: 680px \u301c 750px \u7a0b\u5ea6<\/code><\/td>\r\n      <td>PC\u30e1\u30fc\u30e9\u30fc\u3068\u30b9\u30de\u30fc\u30c8\u30d5\u30a9\u30f3\u306e\u30d0\u30e9\u30f3\u30b9\u304c\u826f\u3044<\/td>\r\n    <\/tr>\r\n    <tr class=\"rung\">\r\n      <th>\u30ec\u30a4\u30a2\u30a6\u30c8<\/th>\r\n      <td><code>&lt;table&gt;<\/code> \u7d71\u4e00<\/td>\r\n      <td>Outlook\u3067\u306e\u4e92\u63db\u6027<\/td>\r\n    <\/tr>\r\n    <tr class=\"rung\">\r\n      <th>\u30d6\u30ed\u30c3\u30af\u5206\u3051<\/th>\r\n      <td>1\u3064\u306e <code>&lt;table&gt;<\/code> = 1\u3064\u306e\u533a\u753b<\/td>\r\n      <td>\u9806\u5e8f\u306e\u5165\u308c\u66ff\u3048\u30fb\u8ffd\u52a0\u30fb\u524a\u9664\u304c\u5b8c\u7d50\u3059\u308b<\/td>\r\n    <\/tr>\r\n    <tr class=\"rung\">\r\n      <th>\u30b9\u30bf\u30a4\u30eb<\/th>\r\n      <td>\u30a4\u30f3\u30e9\u30a4\u30f3\u306e\u307f<\/td>\r\n      <td><code>&lt;head&gt;<\/code>\u306eCSS\u3092\u7121\u8996\u3059\u308b\u30e1\u30fc\u30e9\u30fc\u304c\u3042\u308b<\/td>\r\n    <\/tr>\r\n    <tr class=\"rung\">\r\n      <th>\u80cc\u666f\u8272\uff08\u8584\u3044\u8272\uff09<\/th>\r\n      <td><code>background-image<\/code><\/td>\r\n      <td>\u30c0\u30fc\u30af\u30e2\u30fc\u30c9\u3067\u53cd\u8ee2\u3055\u308c\u306a\u3044<\/td>\r\n    <\/tr>\r\n    <tr class=\"rung\">\r\n      <th>\u30b0\u30ec\u30fc\u30c6\u30ad\u30b9\u30c8<\/th>\r\n      <td><code>#808080<\/code> + <code>mix-blend-mode:multiply<\/code><\/td>\r\n      <td>\u30e9\u30a4\u30c8\/\u30c0\u30fc\u30af\u4e21\u5bfe\u5fdc<\/td>\r\n    <\/tr>\r\n    <tr class=\"rung\">\r\n      <th>\u91cd\u8981\u30b3\u30f3\u30c6\u30f3\u30c4<\/th>\r\n      <td>\u753b\u50cf\u5316<\/td>\r\n      <td>\u6700\u3082\u78ba\u5b9f\u306a\u30c0\u30fc\u30af\u30e2\u30fc\u30c9\u5bfe\u7b56<\/td>\r\n    <\/tr>\r\n    <tr class=\"rung\">\r\n      <th>\u753b\u50cf\u30d1\u30b9<\/th>\r\n      <td>\u7d76\u5bfe\u30d1\u30b9\uff08<code>https:\/\/<\/code>\uff09<\/td>\r\n      <td>\u76f8\u5bfe\u30d1\u30b9\u306f\u6dfb\u4ed8\u6271\u3044\u306b\u306a\u308b\u5834\u5408\u304c\u3042\u308b<\/td>\r\n    <\/tr>\r\n    <tr class=\"rung\">\r\n      <th>\u753b\u50cfURL<\/th>\r\n      <td>\u76f4\u30ea\u30f3\u30af\uff08<code>i.gyazo.com<\/code> \u7b49\uff09<\/td>\r\n      <td>\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u983c\u307f\u3060\u3068\u753b\u50cf\u30d7\u30ed\u30ad\u30b7\u304c\u8ffd\u308f\u306a\u3044\u5834\u5408\u304c\u3042\u308b<\/td>\r\n    <\/tr>\r\n    <tr class=\"rung\">\r\n      <th>\u753b\u50cf\u306e\u5e45<\/th>\r\n      <td><code>style=\"width:100%\"<\/code><\/td>\r\n      <td><code>width<\/code> \u5c5e\u6027\u306f\u8abf\u6574\u304c\u9762\u5012<\/td>\r\n    <\/tr>\r\n    <tr class=\"rung\">\r\n      <th>alt \u306e\u30b5\u30a4\u30ba<\/th>\r\n      <td><code>clamp(\u4e0b\u9650, \u6700\u5927px\u00f710 vw, \u6700\u5927px)<\/code><\/td>\r\n      <td><code>@media<\/code> \u304c\u4f7f\u3048\u306a\u3044\u305f\u3081\u3002\u30a4\u30f3\u30e9\u30a4\u30f3\u306b\u66f8\u3051\u308b<\/td>\r\n    <\/tr>\r\n    <tr class=\"rung\">\r\n      <th>h1<\/th>\r\n      <td>\u30c6\u30ad\u30b9\u30c8\u30671\u56de\u3060\u3051\u66f8\u304f<\/td>\r\n      <td>\u5168\u90e8\u753b\u50cf\u3060\u3068\u53d7\u4fe1\u7bb1\u306e\u629c\u7c8b\u306b\u4f55\u3082\u51fa\u306a\u3044<\/td>\r\n    <\/tr>\r\n    <tr class=\"rung\">\r\n      <th>\u30d7\u30ec\u30d3\u30e5\u30fc<\/th>\r\n      <td>Visually Hidden Preheader Text<\/td>\r\n      <td>\u6307\u5b9a\u3057\u306a\u3044\u3068\u5148\u982d\u306e\u30e9\u30a4\u30d6\u30c6\u30ad\u30b9\u30c8\u304c\u9806\u306b\u62fe\u308f\u308c\u308b<\/td>\r\n    <\/tr>\r\n    <tr class=\"rung\">\r\n      <th>title \/ description \/ OGP<\/th>\r\n      <td>\u66f8\u3044\u3066\u304a\u304f<\/td>\r\n      <td>\u30e1\u30fc\u30eb\u3067\u306f\u52b9\u304b\u306a\u3044\u304c\u3001\u30d6\u30e9\u30a6\u30b6\u30fb\u691c\u7d22\u30fbSNS\u3067\u52b9\u304f<\/td>\r\n    <\/tr>\r\n    <tr class=\"rung\">\r\n      <th>MSO\u6761\u4ef6\u5206\u5c90<\/th>\r\n      <td>\u4e0d\u4f7f\u7528<\/td>\r\n      <td>\u5d29\u308c\u306e\u539f\u56e0\u306b\u306a\u308b\u3002\u53d7\u3051\u4ed8\u3051\u306a\u3044\u914d\u4fe1\u30b7\u30b9\u30c6\u30e0\u3082\u3042\u308b<\/td>\r\n    <\/tr>\r\n  <\/tbody>\r\n<\/table>\r\n\r\n<hr class=\"separator mt-3r\">\r\n\r\n<h2 class=\"fz-xl\">\u304a\u308f\u308a\u306b<\/h2>\r\n<p>HTML\u30e1\u30fc\u30eb\u306e\u96e3\u3057\u3055\u306f\u300c\u74b0\u5883\u3054\u3068\u306b\u6b63\u89e3\u304c\u9055\u3046\u300d\u70b9\u306b\u3042\u308a\u307e\u3059\u3002<code>@media<\/code> \u3067\u4e01\u5be7\u306b\u30c0\u30fc\u30af\u30e2\u30fc\u30c9\u3092\u66f8\u3044\u3066\u3082\u3001Gmail\u3067\u306f\u7121\u8996\u3055\u308c\u307e\u3059\u3002MSO\u6761\u4ef6\u5206\u5c90\u3067Outlook\u5bfe\u5fdc\u3057\u3066\u3082\u3001\u5225\u306e\u30e1\u30fc\u30e9\u30fc\u3067\u5d29\u308c\u307e\u3059\u3002<\/p>\r\n\r\n<p class=\"mt-1r\">\u305f\u3069\u308a\u7740\u3044\u305f\u65b9\u91dd\u306f\u300c<b class=\"fw-600\">\u3069\u306e\u74b0\u5883\u3067\u3082\u540c\u3058\u3088\u3046\u306b\u898b\u3048\u308bHTML\u3092\u66f8\u304f<\/b>\u300d\u3053\u3068\u3002Web\u306e\u5e38\u8b58\u3092\u3044\u3063\u305f\u3093\u6295\u3052\u6368\u3066\u3066\u8a2d\u8a08\u3059\u308b\u3068\u89e3\u6c7a\u3057\u307e\u3059\u3002<\/p>\r\n\r\n<p class=\"mt-1r\">\u305f\u3060\u3001\u6368\u3066\u308b\u3060\u3051\u3067\u3082\u3042\u308a\u307e\u305b\u3093\u3002<code>clamp()<\/code> \u306e\u3088\u3046\u306b\u3001\u52b9\u304f\u74b0\u5883\u3067\u306f\u52b9\u3044\u3066\u3001\u52b9\u304b\u306a\u3044\u74b0\u5883\u3067\u3082\u5bb3\u304c\u306a\u3044\u3082\u306e\u306f\u3001\u4e57\u305b\u3066\u304a\u3044\u3066\u640d\u306f\u306a\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\r\n\r\n<hr class=\"separator mt-3r\">\r\n\r\n<ul class=\"mt-1.5r\" style=\"list-style-type:bullet;\">\r\n  <li>CSS Reset \u30d9\u30fc\u30b9\uff1a&nbsp;<cite><a href=\"https:\/\/github.com\/TedGoas\/Cerberus\" target=\"_blank\" class=\"link\">Cerberus \u2014 Responsive Email Patterns<\/a><\/cite><br \/>\r\n    \uff08Copyright (c) Ted Goas \/ MIT License\uff09<\/li>\r\n  <li>\u30c7\u30b6\u30a4\u30f3\u53c2\u8003\uff1a&nbsp;<cite><a href=\"https:\/\/github.com\/ColorlibHQ\/email-templates\" target=\"_blank\" class=\"link\">ColorlibHQ \/ Free Email Templates<\/a><\/cite>\uff08MIT License\uff09<\/li>\r\n  <li>\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\uff1a&nbsp;<cite><a href=\"https:\/\/gist.github.com\/sarap422\/186f43ac02150b69232229f91072db15\" target=\"_blank\" class=\"link\">htmail-sample1.html \u2014 GitHub Gist<\/a><\/cite><\/li>\r\n<\/ul>","protected":false},"excerpt":{"rendered":"HTML\u30e1\u30fc\u30eb\u306fWeb\u30b5\u30a4\u30c8\u3068\u306f\u307e\u3063\u305f\u304f\u5225\u306e\u30eb\u30fc\u30eb\u3067\u52d5\u304f\u3002table\u5fc5\u9808\u30fb\u30a4\u30f3\u30e9\u30a4\u30f3\u30b9\u30bf\u30a4\u30eb\u5fc5\u9808\u30fb@media\u306fGmail\u3067\u7121\u8996\u3055\u308c\u308b\u3002\u5b9f\u6848\u4ef6\u3067\u5f97\u305f\u300c\u3069\u306e\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3067\u3082\u5d29\u308c\u306a\u3044\u300dHTML\u30e1\u30fc\u30eb\u306e\u8a2d\u8a08\u65b9\u91dd\u3068\u3001background-image\/filter:brightness\u3092\u4f7f\u3063\u305f\u30c0\u30fc\u30af\u30e2\u30fc\u30c9\u5bfe\u7b56\u3092\u5b9f\u88c5\u4f8b\u4ed8\u304d\u3067\u89e3\u8aac\u3002","protected":false},"author":1,"featured_media":13448,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"sns_share_botton_hide":"","vkExUnit_sns_title":"","_vk_print_noindex":"","footnotes":"","vk-ltc-link":"","vk-ltc-target":"0"},"categories":[11],"tags":[1037,1032,1033,1034,1035,1036,492,324,322,323],"group":[],"pg":[],"class_list":["post-13428","post","type-post","status-publish","format-standard","has-post-thumbnail","category-html-css","tag-filter-brightness","tag-1032","tag-1033","tag-css","tag-table-","tag-phpmailer","tag-gmail","tag-324","tag-html","tag-outlook"],"acf":[],"veu_head_title_object":{"title":"","add_site_title":""},"_links":{"self":[{"href":"https:\/\/code-plus.jp\/gp\/wp-json\/wp\/v2\/posts\/13428","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/code-plus.jp\/gp\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/code-plus.jp\/gp\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/code-plus.jp\/gp\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/code-plus.jp\/gp\/wp-json\/wp\/v2\/comments?post=13428"}],"version-history":[{"count":0,"href":"https:\/\/code-plus.jp\/gp\/wp-json\/wp\/v2\/posts\/13428\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/code-plus.jp\/gp\/wp-json\/wp\/v2\/media\/13448"}],"wp:attachment":[{"href":"https:\/\/code-plus.jp\/gp\/wp-json\/wp\/v2\/media?parent=13428"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/code-plus.jp\/gp\/wp-json\/wp\/v2\/categories?post=13428"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/code-plus.jp\/gp\/wp-json\/wp\/v2\/tags?post=13428"},{"taxonomy":"group","embeddable":true,"href":"https:\/\/code-plus.jp\/gp\/wp-json\/wp\/v2\/group?post=13428"},{"taxonomy":"pg","embeddable":true,"href":"https:\/\/code-plus.jp\/gp\/wp-json\/wp\/v2\/pg?post=13428"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}