{"id":1643,"date":"2025-05-19T04:48:03","date_gmt":"2025-05-19T04:48:03","guid":{"rendered":"https:\/\/satokotadesign.com\/blog\/?p=1643"},"modified":"2025-05-19T04:48:03","modified_gmt":"2025-05-19T04:48:03","slug":"custom-properties","status":"publish","type":"post","link":"https:\/\/satokotadesign.com\/blog\/custom-properties\/","title":{"rendered":"\u3010\u521d\u5fc3\u8005OK\u3011\u30ab\u30b9\u30bf\u30e0\u30d7\u30ed\u30d1\u30c6\u30a3\uff08CSS\u5909\u6570\uff09\u3067\u30c6\u30fc\u30de\u30ab\u30e9\u30fc\u3092\u4e00\u62ec\u7ba1\u7406\u3059\u308b\u65b9\u6cd5"},"content":{"rendered":"<p>\u3053\u3093\u306b\u3061\u306f\uff01\u9759\u5ca1\u770c\u6d5c\u677e\u5e02\u3067WEB\u30c7\u30b6\u30a4\u30ca\u30fc\u3092\u3057\u3066\u3044\u307e\u3059\u5c0f\u7027\u3067\u3059\u3002<br \/>\n\u4eca\u56de\u306f\u3001CSS\u306e\u300c\u30ab\u30b9\u30bf\u30e0\u30d7\u30ed\u30d1\u30c6\u30a3\uff08CSS\u5909\u6570\uff09\u300d\u3092\u4f7f\u3063\u3066\u3001\u30c6\u30fc\u30de\u30ab\u30e9\u30fc\u3092\u52b9\u7387\u3088\u304f\u4e00\u62ec\u7ba1\u7406\u3059\u308b\u65b9\u6cd5\u306b\u3064\u3044\u3066\u3054\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n<p>\u65e5\u3005\u306eWEB\u5236\u4f5c\u3067\u3001<span class=\"sc_marker-animation\">\u300c\u5168\u4f53\u306e\u8272\u3092\u5909\u3048\u305f\u3044\u3051\u3069\u3001\u3044\u308d\u3093\u306a\u5834\u6240\u3067\u66f8\u304d\u76f4\u3055\u306a\u3044\u3068\u3044\u3051\u306a\u3044\u2026\u2026\u300d<\/span>\u3068\u60a9\u3093\u3060\u7d4c\u9a13\u306f\u3042\u308a\u307e\u305b\u3093\u304b\uff1f<br \/>\n\u305d\u3093\u306a\u3068\u304d\u306b\u6d3b\u8e8d\u3059\u308b\u306e\u304c\u3001CSS\u5909\u6570\u3067\u3059\u3002<\/p>\n<p>\u521d\u5fc3\u8005\u3067\u3082\u7c21\u5358\u306b\u4f7f\u3048\u3066\u3001\u4e0a\u7d1a\u8005\u3067\u3042\u308c\u3070\u3055\u3089\u306b\u67d4\u8edf\u306a\u30c7\u30b6\u30a4\u30f3\u5bfe\u5fdc\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<br \/>\n\u3053\u306e\u6a5f\u4f1a\u306b\u3001\u3042\u306a\u305f\u306eCSS\u3092\u3082\u3063\u3068\u30b9\u30de\u30fc\u30c8\u306b\u3057\u3066\u307f\u307e\u305b\u3093\u304b\uff1f<\/p>\n<h2 class=\"sc_heading solid blue\"><span class=\"sc_title\">\u30ab\u30b9\u30bf\u30e0\u30d7\u30ed\u30d1\u30c6\u30a3\u3068\u306f\uff1fCSS\u5909\u6570\u306e\u57fa\u672c<\/span><\/h2>\n<p><strong>\u30ab\u30b9\u30bf\u30e0\u30d7\u30ed\u30d1\u30c6\u30a3<\/strong>\u3068\u306f\u3001CSS\u3067\u4f7f\u3048\u308b<span class=\"sc_marker-animation\">\u300c\u5909\u6570\u300d<\/span>\u306e\u3088\u3046\u306a\u3082\u306e\u3067\u3059\u3002<br \/>\n\u8272\u3084\u30b5\u30a4\u30ba\u306a\u3069\u306e\u30b9\u30bf\u30a4\u30eb\u5024\u3092\u4e00\u7b87\u6240\u306b\u307e\u3068\u3081\u3066\u5b9a\u7fa9\u3057\u3001\u305d\u308c\u3092\u8907\u6570\u7b87\u6240\u3067\u518d\u5229\u7528\u3067\u304d\u307e\u3059\u3002<br \/>\n\u307e\u305a\u306f\u57fa\u672c\u306e\u66f8\u304d\u65b9\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<pre class=\"line-numbers\"><code class=\"language-css\"> :root { --main-color: #3498db; } \r\n.button { background-color: var(--main-color); } <\/code><\/pre>\n<p>\u3053\u306e\u3088\u3046\u306b\u3001<span class=\"fontbackground\" style=\"background:;\">:root<\/span> \u306b <span class=\"fontbackground\" style=\"background:;\">--main-color<\/span> \u3092\u5b9a\u7fa9\u3057\u3066\u304a\u3051\u3070\u3001\u3042\u3068\u306f <span class=\"fontbackground\" style=\"background:;\">var(--main-color)<\/span> \u3092\u4f7f\u3046\u3060\u3051\u3067\u3069\u3053\u3067\u3082\u540c\u3058\u8272\u3092\u4f7f\u3044\u307e\u308f\u305b\u307e\u3059\u3002<\/p>\n<div class=\"sc_designlist ul fa_check blue\">\n<ul>\n<li>\u5168\u4f53\u306e\u30c6\u30fc\u30de\u30ab\u30e9\u30fc\u3092\u4e00\u62ec\u3067\u5909\u66f4\u53ef\u80fd<\/li>\n<li>\u4fdd\u5b88\u6027\u304c\u9ad8\u304f\u3001\u5927\u898f\u6a21\u30b5\u30a4\u30c8\u306b\u3082\u6709\u52b9<\/li>\n<li>\u30ab\u30e9\u30fc\u3060\u3051\u3067\u306a\u304f\u3001\u4f59\u767d\u30fb\u30d5\u30a9\u30f3\u30c8\u30b5\u30a4\u30ba\u306a\u3069\u3082\u5909\u6570\u5316OK<\/li>\n<\/ul>\n<\/div>\n<h2 class=\"sc_heading solid blue\"><span class=\"sc_title\">\u3010\u521d\u7d1a\u7de8\u3011\u8272\u3092\u5909\u3048\u305f\u3044\u3068\u304d\u306b\u5927\u6d3b\u8e8d\uff01<\/span><\/h2>\n<p>CSS\u3092\u66f8\u3044\u3066\u3044\u3066\u3088\u304f\u3042\u308b\u306e\u304c\u300c\u540c\u3058\u8272\u3092\u4f55\u5ea6\u3082\u66f8\u3044\u3066\u3044\u308b\u554f\u984c\u300d\u3002<br \/>\n\u4f8b\u3048\u3070\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u3001\u8907\u6570\u306e\u5834\u6240\u306b\u540c\u3058\u8272\u3092\u30d9\u30bf\u66f8\u304d\u3057\u3066\u3044\u308b\u3068\u3001\u5f8c\u3067\u4fee\u6b63\u3059\u308b\u306e\u304c\u5927\u5909\u3067\u3059\u3002<\/p>\n<div class=\"sc_frame_wrap inline blue\">\n<div class=\"sc_frame_title\">\u5f93\u6765\u306e\u3084\u308a\u65b9<\/div>\n<div class=\"sc_frame\">\n.header { background: #3498db; }<br \/>\n.button { background: #3498db; }<br \/>\n.link { color: #3498db; }\n<\/div>\n<\/div>\n<p>\u3053\u306e\u8272\u3092\u300c\u8d64\u300d\u306b\u5909\u3048\u305f\u3044\u5834\u5408\u30013\u30f6\u6240\u3059\u3079\u3066\u66f8\u304d\u63db\u3048\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u305d\u3053\u3067\u30ab\u30b9\u30bf\u30e0\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u4f7f\u3048\u3070\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u30b9\u30de\u30fc\u30c8\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<pre class=\"line-numbers\"><code class=\"language-css\"> :root { --main-color: #3498db; } \r\n.header { background: var(--main-color); } \r\n.button { background: var(--main-color); } \r\n.link { color: var(--main-color); } <\/code><\/pre>\n<p>\u8272\u3092\u5909\u3048\u305f\u3044\u6642\u306f<span class=\"fontbackground\" style=\"background:;\"> --main-color <\/span>\u306e\u4e2d\u8eab\u3092\u5909\u66f4\u3059\u308b\u3060\u3051\u3002<br \/>\n<span class=\"sc_marker-animation\">\u305f\u3063\u305f\u4e00\u884c\u3067\u30b5\u30a4\u30c8\u5168\u4f53\u306e\u5370\u8c61\u3092\u5909\u3048\u3089\u308c\u308b\u306e\u306f\u5927\u304d\u306a\u30e1\u30ea\u30c3\u30c8\u3067\u3059\uff01<\/span><\/p>\n<h2 class=\"sc_heading solid blue\"><span class=\"sc_title\">\u3010\u4e2d\u7d1a\u7de8\u3011\u30c0\u30fc\u30af\u30e2\u30fc\u30c9\u306e\u5207\u308a\u66ff\u3048\u3082\u30e9\u30af\u30e9\u30af<\/span><\/h2>\n<p>\u6700\u8fd1\u3067\u306f\u3001\u30e6\u30fc\u30b6\u30fc\u306e\u74b0\u5883\u306b\u5fdc\u3058\u3066\u30e9\u30a4\u30c8\u30e2\u30fc\u30c9\u30fb\u30c0\u30fc\u30af\u30e2\u30fc\u30c9\u3092\u81ea\u52d5\u3067\u5207\u308a\u66ff\u3048\u308b\u306e\u304c\u4e3b\u6d41\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<br \/>\n\u305d\u3093\u306a\u3068\u304d\u306b\u3082CSS\u5909\u6570\u306f\u5927\u6d3b\u8e8d\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"line-numbers\"><code class=\"language-css\">:root {\r\n --bg-color: #ffffff; \r\n --text-color: #000000; \r\n} \r\n@media (prefers-color-scheme: dark) {\r\n :root { \r\n  --bg-color: #111111; \r\n  --text-color: #f0f0f0; } \r\n} \r\nbody { \r\nbackground: var(--bg-color); \r\ncolor: var(--text-color); \r\n} <\/code><\/pre>\n<div class=\"sc_designlist ul fa_check blue\">\n<ul>\n<li>\u30e6\u30fc\u30b6\u30fc\u306e\u8a2d\u5b9a\u306b\u5408\u308f\u305b\u3066\u8272\u3092\u81ea\u52d5\u5207\u308a\u66ff\u3048<\/li>\n<li>\u30e6\u30fc\u30b6\u30d3\u30ea\u30c6\u30a3\u30fb\u30a2\u30af\u30bb\u30b7\u30d3\u30ea\u30c6\u30a3\u304c\u5411\u4e0a<\/li>\n<li>JS\u306a\u3057\u3067\u3082\u5bfe\u5fdc\u3067\u304d\u308b\u70b9\u304c\u9b45\u529b<\/li>\n<\/ul>\n<\/div>\n<h2 class=\"sc_heading solid blue\"><span class=\"sc_title\">\u3010\u4e0a\u7d1a\u7de8\u3011\u30c6\u30fc\u30de\u5225\u3067\u30af\u30e9\u30b9\u3054\u3068\u306b\u5909\u6570\u3092\u5207\u308a\u66ff\u3048\u308b<\/span><\/h2>\n<p>CMS\u3084JavaScript\u3068\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u30c6\u30fc\u30de\u30ab\u30e9\u30fc\u3092\u30af\u30e9\u30b9\u3054\u3068\u306b\u5207\u308a\u66ff\u3048\u308b\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u3002<\/p>\n<pre class=\"line-numbers\"><code class=\"language-css\"> .theme-blue { \r\n--main-color: #3498db; \r\n} \r\n.theme-red {\r\n --main-color: #e74c3c; \r\n} \r\n.button { \r\nbackground: var(--main-color); \r\n} <\/code><\/pre>\n<p>\u305f\u3068\u3048\u3070WordPress\u3084EC\u30b5\u30a4\u30c8\u306a\u3069\u3067<span class=\"sc_marker-animation\">\u300c\u30e6\u30fc\u30b6\u30fc\u304c\u30c6\u30fc\u30de\u30ab\u30e9\u30fc\u3092\u9078\u3079\u308b\u300d<\/span>\u3068\u3044\u3063\u305f\u6a5f\u80fd\u3092\u5b9f\u88c5\u3059\u308b\u5834\u5408\u3001\u975e\u5e38\u306b\u4fbf\u5229\u3067\u3059\u3002<\/p>\n<div class=\"sc_designlist ul fa_check blue\">\n<ul>\n<li>JavaScript\u3067\u30af\u30e9\u30b9\u3092\u4ed8\u3051\u66ff\u3048\u308b\u3060\u3051\u3067\u8272\u304c\u5909\u308f\u308b<\/li>\n<li>\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u6027\u30fb\u518d\u5229\u7528\u6027\u304c\u9ad8\u3044<\/li>\n<li>\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3\u306e\u5207\u308a\u66ff\u3048\u306b\u3082\u5fdc\u7528\u53ef\u80fd<\/li>\n<\/ul>\n<\/div>\n<h2 class=\"sc_heading solid blue\"><span class=\"sc_title\">\u6ce8\u610f\u70b9\u30fb\u3088\u304f\u3042\u308b\u30df\u30b9<\/span><\/h2>\n<p>\u4fbf\u5229\u306aCSS\u5909\u6570\u3067\u3059\u304c\u3001\u6ce8\u610f\u70b9\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n<div class=\"sc_designlist ol radius solid blue\">\n<ol>\n<li><span class=\"sc_marker-animation\">\u30b9\u30b3\u30fc\u30d7\uff08\u9069\u7528\u7bc4\u56f2\uff09\u3092\u610f\u8b58\u3059\u308b\u3053\u3068<\/span> \u3000\u4f8b\uff1a<span class=\"fontbackground\" style=\"background:;\">:root<\/span> \u306b\u66f8\u3044\u305f\u5909\u6570\u306f\u5168\u4f53\u3067\u4f7f\u3048\u308b\u304c\u3001\u7279\u5b9a\u30af\u30e9\u30b9\u5185\u306b\u66f8\u3044\u305f\u5909\u6570\u306f\u305d\u306e\u4e2d\u3060\u3051\u3002<\/li>\n<li><span class=\"sc_marker-animation\">\u5909\u6570\u540d\u306e\u30b9\u30da\u30eb\u30df\u30b9<\/span> \u3000<span class=\"fontbackground\" style=\"background:;\">--maincolor<\/span> \u3068 <span class=\"fontbackground\" style=\"background:;\">--main-color<\/span> \u306f\u5225\u7269\u3002\u30a8\u30e9\u30fc\u306f\u51fa\u306a\u3044\u304c\u9069\u7528\u3055\u308c\u306a\u3044\u3002<\/li>\n<li><span class=\"sc_marker-animation\">\u53e4\u3044\u30d6\u30e9\u30a6\u30b6\u3067\u672a\u5bfe\u5fdc\u306e\u53ef\u80fd\u6027<\/span> \u3000IE\u3067\u306f\u4f7f\u3048\u306a\u3044\u3002\u5bfe\u5fdc\u30d6\u30e9\u30a6\u30b6\u306e\u78ba\u8a8d\u3082\u5fd8\u308c\u305a\u306b\u3002<\/li>\n<\/ol>\n<\/div>\n<h2 class=\"sc_heading solid blue\"><span class=\"sc_title\">\u307e\u3068\u3081\uff1a\u5909\u6570\u5316\u3067CSS\u306f\u3082\u3063\u3068\u30b9\u30de\u30fc\u30c8\u306b\u306a\u308b<\/span><\/h2>\n<div class=\"sc_designlist ul fa_check blue\">\n<ul>\n<li><span class=\"sc_marker-animation\">CSS\u5909\u6570\u306f\u4fdd\u5b88\u6027\u30fb\u62e1\u5f35\u6027\u304c\u9ad8\u304f\u3001\u73fe\u4ee3\u306eWEB\u5236\u4f5c\u306b\u6b20\u304b\u305b\u306a\u3044\u6a5f\u80fd<\/span><\/li>\n<li><span class=\"sc_marker-animation\">\u521d\u5fc3\u8005\u3067\u3082\u3059\u3050\u306b\u4f7f\u3048\u3066\u3001\u4e0a\u7d1a\u8005\u306b\u3082\u5fdc\u7528\u304c\u52b9\u304f<\/span><\/li>\n<li><span class=\"sc_marker-animation\">\u307e\u305a\u306f\u30c6\u30fc\u30de\u30ab\u30e9\u30fc\u304b\u3089\u5909\u6570\u5316\u3092\u8a66\u3057\u3066\u307f\u3088\u3046\uff01<\/span><\/li>\n<\/ul>\n<\/div>\n<p>CSS\u304c\u82e6\u624b\u3060\u3063\u305f\u65b9\u3082\u3001\u3053\u308c\u3092\u6a5f\u306b\u300c\u5909\u6570\u300d\u3092\u53d6\u308a\u5165\u308c\u3066\u3001\u30b9\u30de\u30fc\u30c8\u3067\u7ba1\u7406\u3057\u3084\u3059\u3044\u30b9\u30bf\u30a4\u30eb\u8a2d\u8a08\u3092\u76ee\u6307\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u306d\uff01<\/p>\n<p>&nbsp;<\/p>\n<p><figure id=\"attachment_475\" aria-describedby=\"caption-attachment-475\" style=\"width: 1500px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/satokotadesign.com\/\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" 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