{"id":13731,"date":"2026-06-23T18:01:35","date_gmt":"2026-06-23T18:01:35","guid":{"rendered":"https:\/\/withcode.tech\/media\/%e3%80%902026%e5%b9%b4%e6%9c%80%e6%96%b0%e3%80%91wordpress%e3%83%86%e3%83%bc%e3%83%9e%e3%81%ae%e3%82%ab%e3%82%b9%e3%82%bf%e3%83%9e%e3%82%a4%e3%82%ba%e6%96%b9%e6%b3%95%e5%ae%8c%e5%85%a8%e3%82%ac-2\/"},"modified":"2026-09-21T06:10:54","modified_gmt":"2026-09-21T06:10:54","slug":"wordpress-theme-customize-css-child","status":"publish","type":"post","link":"https:\/\/withcode.tech\/media\/wordpress-theme-customize-css-child\/","title":{"rendered":"\u30102026\u5e74\u6700\u65b0\u3011WordPress\u30c6\u30fc\u30de\u306e\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u65b9\u6cd5\u5b8c\u5168\u30ac\u30a4\u30c9\uff5c\u521d\u5fc3\u8005\u3067\u3082\u3067\u304d\u308bCSS\u7de8\u96c6\u30fb\u5b50\u30c6\u30fc\u30de\u4f5c\u6210\u307e\u3067"},"content":{"rendered":"\n<!-- withmedia-ketsuron -->\n<h2 class=\"wp-block-heading\">\u3053\u306e\u8a18\u4e8b\u306e\u7d50\u8ad6<\/h2><figure 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class=\"wp-block-image size-large\" data-dia=\"13731-1\"><img decoding=\"async\" alt=\"\u7740\u624b\u524d\u306e\u5fc5\u9808\u78ba\u8a8d\" class=\"wp-image-19573\" src=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/09\/vizmedia-wordpress-theme-customize-css-child-section-01.jpg\"\/><\/figure>\n<h3>\u306a\u305c\u300c\u76f4\u63a5\u7de8\u96c6\u300d\u306f\u5371\u967a\u306a\u306e\u304b\uff1f<\/h3>\n<p>WordPress\u306e\u7ba1\u7406\u753b\u9762\u304b\u3089\u300c\u5916\u89b3 \u2192 \u30c6\u30fc\u30de\u30a8\u30c7\u30a3\u30bf\u30fc\u300d\u3067\u30c6\u30fc\u30de\u306ePHP\u30d5\u30a1\u30a4\u30eb\u3084CSS\u3092\u76f4\u63a5\u7de8\u96c6\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3057\u304b\u3057\u3053\u306e\u65b9\u6cd5\u306b\u306f\u5927\u304d\u306a\u843d\u3068\u3057\u7a74\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u30c6\u30fc\u30de\u3092<strong>\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3057\u305f\u77ac\u9593\u3001\u76f4\u63a5\u7de8\u96c6\u3057\u305f\u5185\u5bb9\u306f\u3059\u3079\u3066\u4e0a\u66f8\u304d\u3055\u308c\u3066\u6d88\u3048\u3066\u3057\u307e\u3044\u307e\u3059<\/strong>\u3002\u4eba\u6c17\u30c6\u30fc\u30de\u306f\u6708\u306b\u6570\u56de\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3055\u308c\u308b\u3053\u3068\u3082\u3042\u308a\u3001\u305d\u306e\u305f\u3073\u306b\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3092\u3084\u308a\u76f4\u3059\u306e\u306f\u73fe\u5b9f\u7684\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u307e\u305f\u3001\u8aa4\u3063\u305f\u30b3\u30fc\u30c9\u3092\u66f8\u3044\u3066\u3057\u307e\u3046\u3068\u3001\u30b5\u30a4\u30c8\u5168\u4f53\u304c\u771f\u3063\u767d\u306b\u306a\u308b\u300cWhite Screen of Death\uff08WSOD\uff09\u300d\u304c\u8d77\u304d\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u3092\u9632\u3050\u305f\u3081\u306b\u3082\u3001\u6b63\u3057\u3044\u65b9\u6cd5\u3067\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3092\u884c\u3046\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n<h3>\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u306e3\u3064\u306e\u6b63\u3057\u3044\u30a2\u30d7\u30ed\u30fc\u30c1<\/h3>\n<ol>\n<li><strong>\u5b50\u30c6\u30fc\u30de\uff08Child Theme\uff09\u3092\u4f5c\u6210\u3057\u3066\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3059\u308b<\/strong>\uff1a\u6700\u3082\u5b89\u5168\u3067\u63a8\u5968\u3055\u308c\u308b\u65b9\u6cd5<\/li>\n<li><strong>\u30ab\u30b9\u30bf\u30de\u30a4\u30b6\u30fc\uff08Customizer\uff09\u3092\u4f7f\u3046<\/strong>\uff1a\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u4e0d\u8981\u3067\u624b\u8efd\u306b\u5909\u66f4\u3067\u304d\u308b<\/li>\n<li><strong>\u30d7\u30e9\u30b0\u30a4\u30f3\u3092\u4f7f\u3063\u305fCSS\u30ab\u30b9\u30bf\u30de\u30a4\u30ba<\/strong>\uff1a\u300cSiteOrigin CSS\u300d\u306a\u3069\u306e\u30d7\u30e9\u30b0\u30a4\u30f3\u3092\u6d3b\u7528<\/li>\n<\/ol>\n<p>\u305d\u308c\u305e\u308c\u306e\u65b9\u6cd5\u3092\u9806\u306b\u89e3\u8aac\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<hr\/>\n<h2>\u3010\u57fa\u672c\u3011WordPress\u30ab\u30b9\u30bf\u30de\u30a4\u30b6\u30fc\u3067\u30c7\u30b6\u30a4\u30f3\u3092\u5909\u66f4\u3059\u308b\u65b9\u6cd5<\/h2><figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"1672\" height=\"941\" alt=\"\u3010\u57fa\u672c\u3011WordPress\u30ab\u30b9\u30bf\u30de\u30a4\u30b6\u30fc\u3067\u30c7\u30b6\u30a4\u30f3\u3092\u5909\u66f4\u3059\u308b\u65b9\u6cd5\" class=\"wp-image-24895\" src=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/09\/wordpress-theme-customize-css-child-h2-03-v2.jpg\" srcset=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/09\/wordpress-theme-customize-css-child-h2-03-v2.jpg 1672w, https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/09\/wordpress-theme-customize-css-child-h2-03-v2-768x432.jpg 768w, https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/09\/wordpress-theme-customize-css-child-h2-03-v2-1536x864.jpg 1536w\" sizes=\"(max-width: 1672px) 100vw, 1672px\" \/><\/figure>\n<p>\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u304c\u4e0d\u8981\u306a\u30ab\u30b9\u30bf\u30de\u30a4\u30b6\u30fc\u304b\u3089\u59cb\u3081\u307e\u3057\u3087\u3046\u3002\u7ba1\u7406\u753b\u9762\u306e\u300c\u5916\u89b3 \u2192 \u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u300d\u304b\u3089\u958b\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3>\u30ab\u30b9\u30bf\u30de\u30a4\u30b6\u30fc\u3067\u3067\u304d\u308b\u3053\u3068<\/h3>\n<ul>\n<li>\u30b5\u30a4\u30c8\u306e\u30bf\u30a4\u30c8\u30eb\u30fb\u30ad\u30e3\u30c3\u30c1\u30d5\u30ec\u30fc\u30ba\u306e\u5909\u66f4<\/li>\n<li>\u30b5\u30a4\u30c8\u30a2\u30a4\u30b3\u30f3\uff08\u30d5\u30a1\u30d3\u30b3\u30f3\uff09\u306e\u8a2d\u5b9a<\/li>\n<li>\u30d8\u30c3\u30c0\u30fc\u753b\u50cf\u30fb\u80cc\u666f\u753b\u50cf\u306e\u5909\u66f4<\/li>\n<li>\u30ab\u30e9\u30fc\u30d1\u30ec\u30c3\u30c8\u306e\u5909\u66f4\uff08\u30d5\u30a9\u30f3\u30c8\u30ab\u30e9\u30fc\u30fb\u30ea\u30f3\u30af\u30ab\u30e9\u30fc\u306a\u3069\uff09<\/li>\n<li>\u30e1\u30cb\u30e5\u30fc\u306e\u8a2d\u5b9a\u30fb\u5909\u66f4<\/li>\n<li>\u30a6\u30a3\u30b8\u30a7\u30c3\u30c8\u306e\u914d\u7f6e<\/li>\n<li>\u8ffd\u52a0CSS\u306e\u8a18\u8ff0<\/li>\n<\/ul>\n<p>\u7279\u306b\u300c<strong>\u8ffd\u52a0CSS<\/strong>\u300d\u6a5f\u80fd\u306f\u975e\u5e38\u306b\u4fbf\u5229\u3067\u3059\u3002\u30ab\u30b9\u30bf\u30de\u30a4\u30b6\u30fc\u5185\u306e\u300c\u8ffd\u52a0CSS\u300d\u6b04\u306b\u30b9\u30bf\u30a4\u30eb\u3092\u66f8\u304d\u8fbc\u3080\u3053\u3068\u3067\u3001\u30c6\u30fc\u30de\u30d5\u30a1\u30a4\u30eb\u3092\u76f4\u63a5\u7de8\u96c6\u305b\u305a\u306b\u30c7\u30b6\u30a4\u30f3\u3092\u5909\u66f4\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u65b9\u6cd5\u306f\u30c6\u30fc\u30de\u3092\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3057\u3066\u3082\u5909\u66f4\u5185\u5bb9\u304c\u6d88\u3048\u306a\u3044\u305f\u3081\u3001\u8efd\u5fae\u306a\u30c7\u30b6\u30a4\u30f3\u5909\u66f4\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<h3>\u8ffd\u52a0CSS\u306e\u4f7f\u3044\u65b9\uff1a\u5b9f\u4f8b\u4ed8\u304d<\/h3>\n<p>\u305f\u3068\u3048\u3070\u3001\u30b5\u30a4\u30c8\u5168\u4f53\u306e\u30d5\u30a9\u30f3\u30c8\u3092Google Fonts\u306e\u300cNoto Sans JP\u300d\u306b\u5909\u66f4\u3057\u305f\u3044\u5834\u5408\u3001\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u3092\u8ffd\u52a0CSS\u306b\u8cbc\u308a\u4ed8\u3051\u307e\u3059\u3002<\/p>\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-css\" data-lang=\"CSS\"><code>@import url('https:\/\/fonts.googleapis.com\/css2?family=Noto+Sans+JP:wght@400;700&amp;display=swap');\n\nbody {\n  font-family: 'Noto Sans JP', sans-serif;\n}\n<\/code><\/pre><\/div>\n<p>\u307e\u305f\u3001\u898b\u51fa\u3057\uff08h2\uff09\u306b\u4e0b\u7dda\u3092\u5f15\u3044\u3066\u30a2\u30af\u30bb\u30f3\u30c8\u3092\u3064\u3051\u305f\u3044\u5834\u5408\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-css\" data-lang=\"CSS\"><code>h2 {\n  border-bottom: 3px solid #0073aa;\n  padding-bottom: 8px;\n}\n<\/code><\/pre><\/div>\n<p>\u3053\u306e\u3088\u3046\u306b\u3001\u30ab\u30b9\u30bf\u30de\u30a4\u30b6\u30fc\u306e\u8ffd\u52a0CSS\u6a5f\u80fd\u3092\u4f7f\u3048\u3070\u3001<strong>\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u3067\u30d7\u30ec\u30d3\u30e5\u30fc\u3092\u78ba\u8a8d\u3057\u306a\u304c\u3089<\/strong>\u30b9\u30bf\u30a4\u30eb\u3092\u8abf\u6574\u3067\u304d\u307e\u3059\u3002<\/p>\n<hr\/>\n<h2>\u3010\u63a8\u5968\u3011\u5b50\u30c6\u30fc\u30de\uff08Child Theme\uff09\u306e\u4f5c\u308a\u65b9\u3068\u4f7f\u3044\u65b9<\/h2>\n<figure class=\"wp-block-image size-large\" data-dia=\"13731-2\"><img decoding=\"async\" alt=\"\u5b50\u30c6\u30fc\u30de\u306e\u4f5c\u308a\u65b9\" class=\"wp-image-19574\" src=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/09\/vizmedia-wordpress-theme-customize-css-child-section-02.jpg\"\/><\/figure>\n<p>\u3088\u308a\u672c\u683c\u7684\u306a\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3092\u884c\u3046\u306a\u3089\u3001<strong>\u5b50\u30c6\u30fc\u30de\u306e\u4f5c\u6210\u304c\u5fc5\u9808<\/strong>\u3067\u3059\u3002\u5b50\u30c6\u30fc\u30de\u3068\u306f\u3001\u65e2\u5b58\u306e\u30c6\u30fc\u30de\uff08\u89aa\u30c6\u30fc\u30de\uff09\u306e\u6a5f\u80fd\u3092\u5f15\u304d\u7d99\u304e\u306a\u304c\u3089\u3001\u72ec\u81ea\u306e\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3092\u5b89\u5168\u306b\u8ffd\u52a0\u3067\u304d\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002<\/p>\n<h3>\u5b50\u30c6\u30fc\u30de\u4f5c\u6210\u306e\u624b\u9806\uff08\u624b\u52d5\uff09<\/h3>\n<p>\u3053\u3053\u3067\u306f\u4eba\u6c17\u30c6\u30fc\u30de\u300cCocoon\u300d\u3092\u4f8b\u306b\u3001\u5b50\u30c6\u30fc\u30de\u3092\u624b\u52d5\u3067\u4f5c\u6210\u3059\u308b\u624b\u9806\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n<h4>\u30b9\u30c6\u30c3\u30d71\uff1a\u5b50\u30c6\u30fc\u30de\u7528\u306e\u30d5\u30a9\u30eb\u30c0\u3092\u4f5c\u6210\u3059\u308b<\/h4>\n<p>FTP\u30bd\u30d5\u30c8\uff08FileZilla\u306a\u3069\uff09\u307e\u305f\u306f\u30ec\u30f3\u30bf\u30eb\u30b5\u30fc\u30d0\u30fc\u306e\u30d5\u30a1\u30a4\u30eb\u30de\u30cd\u30fc\u30b8\u30e3\u30fc\u3067\u3001\u4ee5\u4e0b\u306e\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306b\u79fb\u52d5\u3057\u307e\u3059\u3002<\/p>\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>\/wp-content\/themes\/<\/code><\/pre><\/div>\n<p>\u3053\u3053\u306b <code>cocoon-child<\/code> \u3068\u3044\u3046\u540d\u524d\u306e\u65b0\u3057\u3044\u30d5\u30a9\u30eb\u30c0\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002\u30d5\u30a9\u30eb\u30c0\u540d\u306f\u4efb\u610f\u3067\u3059\u304c\u3001\u300c\u89aa\u30c6\u30fc\u30de\u540d-child\u300d\u3068\u3059\u308b\u306e\u304c\u4e00\u822c\u7684\u3067\u3059\u3002<\/p>\n<h4>\u30b9\u30c6\u30c3\u30d72\uff1astyle.css\u3092\u4f5c\u6210\u3059\u308b<\/h4>\n<p>\u4f5c\u6210\u3057\u305f\u30d5\u30a9\u30eb\u30c0\u306e\u4e2d\u306b <code>style.css<\/code> \u3068\u3044\u3046\u30d5\u30a1\u30a4\u30eb\u3092\u4f5c\u6210\u3057\u3001\u4ee5\u4e0b\u306e\u5185\u5bb9\u3092\u8a18\u8ff0\u3057\u307e\u3059\u3002<\/p>\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>\/*\nTheme Name: Cocoon Child\nTheme URI: https:\/\/example.com\nDescription: Cocoon Child Theme\nAuthor: Your Name\nAuthor URI: https:\/\/example.com\nTemplate: cocoon-master\nVersion: 1.0.0\n*\/\n<\/code><\/pre><\/div>\n<p>\u91cd\u8981\u306a\u306e\u306f <strong><code>Template:<\/code> \u306e\u90e8\u5206<\/strong>\u3067\u3001\u3053\u3053\u306b\u89aa\u30c6\u30fc\u30de\u306e\u30d5\u30a9\u30eb\u30c0\u540d\u3092\u6b63\u78ba\u306b\u8a18\u8ff0\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002Cocoon\u306e\u5834\u5408\u306f <code>cocoon-master<\/code> \u3067\u3059\u3002<\/p>\n<h4>\u30b9\u30c6\u30c3\u30d73\uff1afunctions.php\u3092\u4f5c\u6210\u3059\u308b<\/h4>\n<p>\u540c\u3058\u30d5\u30a9\u30eb\u30c0\u306b <code>functions.php<\/code> \u3092\u4f5c\u6210\u3057\u3001\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u3092\u8a18\u8ff0\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u89aa\u30c6\u30fc\u30de\u306e\u30b9\u30bf\u30a4\u30eb\u30b7\u30fc\u30c8\u3092\u8aad\u307f\u8fbc\u307f\u307e\u3059\u3002<\/p>\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-php\" data-lang=\"PHP\"><code>&lt;?php\nadd_action( 'wp_enqueue_scripts', 'child_theme_enqueue_styles' );\nfunction child_theme_enqueue_styles() {\n    wp_enqueue_style(\n        'parent-style',\n        get_template_directory_uri() . '\/style.css'\n    );\n}\n<\/code><\/pre><\/div>\n<h4>\u30b9\u30c6\u30c3\u30d74\uff1a\u5b50\u30c6\u30fc\u30de\u3092\u6709\u52b9\u5316\u3059\u308b<\/h4>\n<p>\u7ba1\u7406\u753b\u9762\u306e\u300c\u5916\u89b3 \u2192 \u30c6\u30fc\u30de\u300d\u3092\u958b\u304f\u3068\u3001\u4f5c\u6210\u3057\u305f\u5b50\u30c6\u30fc\u30de\u304c\u8868\u793a\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u300c\u6709\u52b9\u5316\u300d\u3092\u30af\u30ea\u30c3\u30af\u3057\u307e\u3059\u3002\u3053\u308c\u3067\u5b50\u30c6\u30fc\u30de\u304c\u9069\u7528\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n<h3>\u30d7\u30e9\u30b0\u30a4\u30f3\u3092\u4f7f\u3063\u305f\u7c21\u5358\u306a\u5b50\u30c6\u30fc\u30de\u4f5c\u6210\u65b9\u6cd5<\/h3>\n<p>\u624b\u52d5\u3067\u306e\u4f5c\u6210\u304c\u96e3\u3057\u3044\u5834\u5408\u306f\u3001<strong>\u300cChild Theme Configurator\u300d<\/strong>\u3068\u3044\u3046\u30d7\u30e9\u30b0\u30a4\u30f3\u3092\u4f7f\u3046\u65b9\u6cd5\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n<ol>\n<li>\u30d7\u30e9\u30b0\u30a4\u30f3\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u30fb\u6709\u52b9\u5316<\/li>\n<li>\u300c\u30c4\u30fc\u30eb \u2192 Child Themes\u300d\u3078\u79fb\u52d5<\/li>\n<li>\u89aa\u30c6\u30fc\u30de\u3092\u9078\u629e\u3057\u3066\u300c\u5b50\u30c6\u30fc\u30de\u3092\u4f5c\u6210\u300d\u3092\u30af\u30ea\u30c3\u30af<\/li>\n<li>\u81ea\u52d5\u751f\u6210\u3055\u308c\u305f\u5b50\u30c6\u30fc\u30de\u3092\u6709\u52b9\u5316<\/li>\n<\/ol>\n<p>\u308f\u305a\u304b\u6570\u30af\u30ea\u30c3\u30af\u3067\u5b50\u30c6\u30fc\u30de\u304c\u5b8c\u6210\u3059\u308b\u305f\u3081\u3001\u521d\u5fc3\u8005\u306e\u65b9\u306f\u3053\u3061\u3089\u306e\u65b9\u6cd5\u304c\u304a\u3059\u3059\u3081\u3067\u3059\u3002<\/p>\n<hr\/>\n<h2>\u5b50\u30c6\u30fc\u30de\u3067CSS\u3092\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3059\u308b\u5b9f\u8df5\u7684\u306a\u65b9\u6cd5<\/h2>\n<figure class=\"wp-block-image size-large\" data-dia=\"13731-3\"><img decoding=\"async\" alt=\"CSS\u3092\u5f53\u3066\u308b\u624b\u9806\" class=\"wp-image-19575\" src=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/09\/vizmedia-wordpress-theme-customize-css-child-section-03.jpg\"\/><\/figure>\n<p>\u5b50\u30c6\u30fc\u30de\u3092\u6709\u52b9\u5316\u3057\u305f\u3089\u3001<code>style.css<\/code> \u306b\u81ea\u5206\u306e\u30b9\u30bf\u30a4\u30eb\u3092\u8ffd\u8a18\u3057\u3066\u3044\u304d\u307e\u3059\u3002\u89aa\u30c6\u30fc\u30de\u306e\u30b9\u30bf\u30a4\u30eb\u306f\u5f15\u304d\u7d99\u304c\u308c\u308b\u305f\u3081\u3001<strong>\u5909\u66f4\u3057\u305f\u3044\u90e8\u5206\u3060\u3051\u3092\u8a18\u8ff0\u3059\u308b<\/strong>\u3060\u3051\u3067OK\u3067\u3059\u3002<\/p>\n<h3>\u3088\u304f\u4f7f\u3046CSS\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u4f8b5\u9078<\/h3>\n<h4>\u2460\u30dc\u30bf\u30f3\u306e\u8272\u3068\u30db\u30d0\u30fc\u30a8\u30d5\u30a7\u30af\u30c8\u3092\u5909\u66f4<\/h4>\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-css\" data-lang=\"CSS\"><code>.btn-primary {\n  background-color: #ff6b35;\n  border-radius: 30px;\n  transition: opacity 0.3s ease;\n}\n\n.btn-primary:hover {\n  opacity: 0.8;\n}\n<\/code><\/pre><\/div>\n<h4>\u2461\u30b9\u30de\u30fc\u30c8\u30d5\u30a9\u30f3\u8868\u793a\u306e\u30d5\u30a9\u30f3\u30c8\u30b5\u30a4\u30ba\u8abf\u6574<\/h4>\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-css\" data-lang=\"CSS\"><code>@media screen and (max-width: 767px) {\n  body {\n    font-size: 15px;\n    line-height: 1.8;\n  }\n}\n<\/code><\/pre><\/div>\n<h4>\u2462\u30d8\u30c3\u30c0\u30fc\u306e\u9ad8\u3055\u3068\u80cc\u666f\u8272\u3092\u5909\u66f4<\/h4>\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-css\" data-lang=\"CSS\"><code>#header {\n  height: 80px;\n  background-color: #1a1a2e;\n}\n<\/code><\/pre><\/div>\n<h4>\u2463\u8a18\u4e8b\u4e00\u89a7\u306e\u30b5\u30e0\u30cd\u30a4\u30eb\u753b\u50cf\u3092\u6b63\u65b9\u5f62\u306b\u30c8\u30ea\u30df\u30f3\u30b0<\/h4>\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-css\" data-lang=\"CSS\"><code>.entry-card-thumb img {\n  width: 100%;\n  height: 200px;\n  object-fit: cover;\n}\n<\/code><\/pre><\/div>\n<h4>\u2464\u30b5\u30a4\u30c9\u30d0\u30fc\u3092\u975e\u8868\u793a\u306b\u3059\u308b<\/h4>\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-css\" data-lang=\"CSS\"><code>#sidebar {\n  display: none;\n}\n<\/code><\/pre><\/div>\n<hr\/>\n<h2>functions.php\u3067\u6a5f\u80fd\u3092\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3059\u308b\u65b9\u6cd5<\/h2><figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"1672\" height=\"941\" alt=\"functions.php\u3067\u6a5f\u80fd\u3092\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3059\u308b\u65b9\u6cd5\" class=\"wp-image-24896\" src=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/09\/wordpress-theme-customize-css-child-h2-06-v2.jpg\" srcset=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/09\/wordpress-theme-customize-css-child-h2-06-v2.jpg 1672w, https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/09\/wordpress-theme-customize-css-child-h2-06-v2-768x432.jpg 768w, https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/09\/wordpress-theme-customize-css-child-h2-06-v2-1536x864.jpg 1536w\" sizes=\"(max-width: 1672px) 100vw, 1672px\" \/><\/figure>\n<p>CSS\u3067\u306f\u30c7\u30b6\u30a4\u30f3\u306e\u5909\u66f4\u304c\u4e2d\u5fc3\u3067\u3059\u304c\u3001<code>functions.php<\/code> \u3092\u4f7f\u3046\u3068<strong>WordPress\u306e\u6a5f\u80fd\u305d\u306e\u3082\u306e\u3092\u30ab\u30b9\u30bf\u30de\u30a4\u30ba<\/strong>\u3067\u304d\u307e\u3059\u3002\u5b50\u30c6\u30fc\u30de\u306e <code>functions.php<\/code> \u306b\u8a18\u8ff0\u3059\u308b\u3053\u3068\u3067\u3001\u30c6\u30fc\u30de\u306e\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u306b\u5f71\u97ff\u3055\u308c\u305a\u306b\u6a5f\u80fd\u3092\u8ffd\u52a0\u30fb\u5909\u66f4\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3>functions.php\u3067\u3067\u304d\u308b\u3053\u3068\uff08\u5b9f\u4f8b\u4ed8\u304d\uff09<\/h3>\n<h4>\u2460\u629c\u7c8b\u6587\u5b57\u6570\u3092\u5909\u66f4\u3059\u308b<\/h4>\n<p>\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u306f\u8a18\u4e8b\u4e00\u89a7\u306b\u8868\u793a\u3055\u308c\u308b\u629c\u7c8b\u304c55\u6587\u5b57\u7a0b\u5ea6\u3067\u3059\u304c\u3001\u4efb\u610f\u306e\u6587\u5b57\u6570\u306b\u5909\u66f4\u3067\u304d\u307e\u3059\u3002<\/p>\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-javascript\" data-lang=\"JavaScript\"><code>function custom_excerpt_length( $length ) {\n    return 100;\n}\nadd_filter( 'excerpt_length', 'custom_excerpt_length', 999 );\n<\/code><\/pre><\/div>\n<h4>\u2461\u30ed\u30b0\u30a4\u30f3\u753b\u9762\u306e\u30ed\u30b4\u3092\u5909\u66f4\u3059\u308b<\/h4>\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-javascript\" data-lang=\"JavaScript\"><code>function custom_login_logo() {\n    echo '&lt;style&gt;\n        #login h1 a {\n            background-image: url(' . get_stylesheet_directory_uri() . '\/images\/logo.png);\n            background-size: contain;\n            width: 200px;\n            height: 80px;\n        }\n    &lt;\/style&gt;';\n}\nadd_action( 'login_enqueue_scripts', 'custom_login_logo' );\n<\/code><\/pre><\/div>\n<h4>\u2462\u7ba1\u7406\u30d0\u30fc\u3092\u975e\u8868\u793a\u306b\u3059\u308b\uff08\u975e\u7ba1\u7406\u8005\u306e\u307f\uff09<\/h4>\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-javascript\" data-lang=\"JavaScript\"><code>add_action('after_setup_theme', 'remove_admin_bar');\nfunction remove_admin_bar() {\n    if (!current_user_can('administrator') &amp;&amp; !is_admin()) {\n        show_admin_bar(false);\n    }\n}\n<\/code><\/pre><\/div>\n<h3>functions.php\u7de8\u96c6\u6642\u306e\u6ce8\u610f\u70b9<\/h3>\n<p>functions.php\u306e\u7de8\u96c6\u306f\u975e\u5e38\u306b\u5f37\u529b\u3067\u3059\u304c\u3001<strong>\u69cb\u6587\u30df\u30b91\u3064\u3067\u30b5\u30a4\u30c8\u304c\u771f\u3063\u767d\u306b\u306a\u308b<\/strong>\u30ea\u30b9\u30af\u304c\u3042\u308a\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u70b9\u306b\u5fc5\u305a\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<ul>\n<li>\u7de8\u96c6\u524d\u306b\u5fc5\u305a\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u3092\u53d6\u308b\uff08BackWPup\u306a\u3069\u306e\u30d7\u30e9\u30b0\u30a4\u30f3\u3092\u4f7f\u7528\uff09<\/li>\n<li>PHP\u306e\u9589\u3058\u30bf\u30b0 <code>?&gt;<\/code> \u306f\u30d5\u30a1\u30a4\u30eb\u672b\u5c3e\u306b\u66f8\u304b\u306a\u3044\uff08\u30db\u30ef\u30a4\u30c8\u30b9\u30af\u30ea\u30fc\u30f3\u306e\u539f\u56e0\u306b\u306a\u308b\uff09<\/li>\n<li>\u30ed\u30fc\u30ab\u30eb\u74b0\u5883\uff08Local by Flywheel\u306a\u3069\uff09\u3067\u30c6\u30b9\u30c8\u3057\u3066\u304b\u3089\u672c\u756a\u74b0\u5883\u306b\u53cd\u6620\u3059\u308b<\/li>\n<\/ul>\n<hr\/>\n<h2>2026\u5e74\u6ce8\u76ee\u306eWordPress\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u30c8\u30ec\u30f3\u30c9<\/h2><figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"1672\" height=\"941\" alt=\"2026\u5e74\u6ce8\u76ee\u306eWordPress\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u30c8\u30ec\u30f3\u30c9\" class=\"wp-image-24897\" src=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/09\/wordpress-theme-customize-css-child-h2-07-v2.jpg\" srcset=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/09\/wordpress-theme-customize-css-child-h2-07-v2.jpg 1672w, https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/09\/wordpress-theme-customize-css-child-h2-07-v2-768x432.jpg 768w, https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/09\/wordpress-theme-customize-css-child-h2-07-v2-1536x864.jpg 1536w\" sizes=\"(max-width: 1672px) 100vw, 1672px\" \/><\/figure>\n<h3>\u30d5\u30eb\u30b5\u30a4\u30c8\u7de8\u96c6\uff08FSE\uff09\u3068\u30d6\u30ed\u30c3\u30af\u30c6\u30fc\u30de\u3078\u306e\u79fb\u884c<\/h3>\n<p>2026\u5e74\u73fe\u5728\u3001WordPress\u306e\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u306e\u30c8\u30ec\u30f3\u30c9\u306f\u5927\u304d\u304f\u5909\u308f\u308a\u3064\u3064\u3042\u308a\u307e\u3059\u3002WordPress 6.x\u306e\u767b\u5834\u4ee5\u964d\u3001<strong>\u30d5\u30eb\u30b5\u30a4\u30c8\u7de8\u96c6\uff08Full Site Editing \/ FSE\uff09<\/strong>\u304c\u6a19\u6e96\u7684\u306a\u6a5f\u80fd\u3068\u3057\u3066\u666e\u53ca\u3057\u3001\u591a\u304f\u306e\u30c6\u30fc\u30de\u304c\u30d6\u30ed\u30c3\u30af\u30c6\u30fc\u30de\u3078\u3068\u79fb\u884c\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u30d6\u30ed\u30c3\u30af\u30c6\u30fc\u30de\u3067\u306f\u3001\u5f93\u6765\u306ePHP\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u3067\u306f\u306a\u304f<strong>HTML\u30d9\u30fc\u30b9\u306e\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u3068\u30d6\u30ed\u30c3\u30af\u30a8\u30c7\u30a3\u30bf\u30fc\uff08Gutenberg\uff09\u3092\u4f7f\u3063\u3066\u30b5\u30a4\u30c8\u5168\u4f53\u306e\u30c7\u30b6\u30a4\u30f3\u3092\u7ba1\u7406<\/strong>\u3057\u307e\u3059\u3002<\/p>\n<p>\u5177\u4f53\u7684\u306b\u306f\u3001\u300c\u5916\u89b3 \u2192 \u30a8\u30c7\u30a3\u30bf\u30fc\u300d\u304b\u3089\u30d8\u30c3\u30c0\u30fc\u3084\u30d5\u30c3\u30bf\u30fc\u3001\u30a2\u30fc\u30ab\u30a4\u30d6\u30da\u30fc\u30b8\u306e\u30ec\u30a4\u30a2\u30a6\u30c8\u3092GUI\u3067\u7de8\u96c6\u3067\u304d\u307e\u3059\u3002\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u306a\u3057\u3067\u30d7\u30ed\u30d5\u30a7\u30c3\u30b7\u30e7\u30ca\u30eb\u306a\u30c7\u30b6\u30a4\u30f3\u304c\u5b9f\u73fe\u3067\u304d\u308b\u70b9\u306f\u5927\u304d\u306a\u9b45\u529b\u3067\u3059\u3002<\/p>\n<h3>\u30d6\u30ed\u30c3\u30af\u30c6\u30fc\u30de\u306e\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\uff1atheme.json\u306e\u6d3b\u7528<\/h3>\n<p>\u30d6\u30ed\u30c3\u30af\u30c6\u30fc\u30de\u3067\u306f\u3001<code>theme.json<\/code> \u3068\u3044\u3046\u30d5\u30a1\u30a4\u30eb\u3067\u30b5\u30a4\u30c8\u5168\u4f53\u306e\u30c7\u30b6\u30a4\u30f3\u30c8\u30fc\u30af\u30f3\uff08\u8272\u30fb\u30d5\u30a9\u30f3\u30c8\u30fb\u4f59\u767d\u306a\u3069\uff09\u3092\u4e00\u5143\u7ba1\u7406\u3067\u304d\u307e\u3059\u3002<\/p>\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-json\" data-lang=\"JSON\"><code>{\n  \"version\": 2,\n  \"settings\": {\n    \"color\": {\n      \"palette\": [\n        {\n          \"slug\": \"primary\",\n          \"color\": \"#0073aa\",\n          \"name\": \"Primary\"\n        },\n        {\n          \"slug\": \"secondary\",\n          \"color\": \"#ff6b35\",\n          \"name\": \"Secondary\"\n        }\n      ]\n    },\n    \"typography\": {\n      \"fontSizes\": [\n        {\n          \"slug\": \"small\",\n          \"size\": \"14px\",\n          \"name\": \"Small\"\n        },\n        {\n          \"slug\": \"large\",\n          \"size\": \"24px\",\n          \"name\": \"Large\"\n        }\n      ]\n    }\n  }\n}\n<\/code><\/pre><\/div>\n<p>\u3053\u306e <code>theme.json<\/code> \u3092\u5b50\u30c6\u30fc\u30de\u306b\u542b\u3081\u308b\u3053\u3068\u3067\u3001\u89aa\u30c6\u30fc\u30de\u306e\u30c7\u30b6\u30a4\u30f3\u8a2d\u5b9a\u3092\u5b89\u5168\u306b\u4e0a\u66f8\u304d\u3067\u304d\u307e\u3059\u3002\u4eca\u5f8c\u306eWordPress\u958b\u767a\u306b\u304a\u3044\u3066\u3001<strong>theme.json\u306e\u7406\u89e3\u306f\u307b\u307c\u5fc5\u9808\u30b9\u30ad\u30eb<\/strong>\u3068\u306a\u308a\u3064\u3064\u3042\u308a\u307e\u3059\u3002<\/p>\n<hr\/>\n<h2>WordPress\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3067\u3064\u307e\u305a\u304d\u3084\u3059\u3044\u30dd\u30a4\u30f3\u30c8\u3068\u89e3\u6c7a\u7b56<\/h2>\n<figure class=\"wp-block-image size-large\" data-dia=\"13731-4\"><img decoding=\"async\" alt=\"\u3064\u307e\u305a\u304d\u306e\u89e3\u6c7a\" class=\"wp-image-19576\" src=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/09\/vizmedia-wordpress-theme-customize-css-child-section-04.jpg\"\/><\/figure>\n<h3>Q\uff1aCSS\u3092\u8ffd\u8a18\u3057\u3066\u3082\u53cd\u6620\u3055\u308c\u306a\u3044<\/h3>\n<p><strong>\u539f\u56e0<\/strong>\uff1a\u30d6\u30e9\u30a6\u30b6\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u304c\u6b8b\u3063\u3066\u3044\u308b\u3001\u307e\u305f\u306f\u8a18\u8ff0\u3057\u305f\u30bb\u30ec\u30af\u30bf\u306e\u8a73\u7d30\u5ea6\uff08Specificity\uff09\u304c\u89aa\u30c6\u30fc\u30de\u3088\u308a\u4f4e\u3044\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p><strong>\u89e3\u6c7a\u7b56<\/strong>\uff1a\n<ul>\n<li>\u30d6\u30e9\u30a6\u30b6\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u30af\u30ea\u30a2\uff08Ctrl+Shift+R\uff09\u3059\u308b<\/li>\n<li>Chrome DevTools\u3067\u8981\u7d20\u3092\u691c\u8a3c\u3057\u3001\u9069\u5207\u306a\u30bb\u30ec\u30af\u30bf\u3092\u78ba\u8a8d\u3059\u308b<\/li>\n<li>\u3069\u3046\u3057\u3066\u3082\u53cd\u6620\u3055\u308c\u306a\u3044\u5834\u5408\u306f <code>!important<\/code> \u3092\u4f7f\u3046\uff08\u4e71\u7528\u306f\u907f\u3051\u308b\uff09<\/li>\n<\/ul>\n<\/p>\n<h3>Q\uff1a\u5b50\u30c6\u30fc\u30de\u3092\u6709\u52b9\u5316\u3057\u305f\u3089\u30c7\u30b6\u30a4\u30f3\u304c\u5d29\u308c\u305f<\/h3>\n<p><strong>\u539f\u56e0<\/strong>\uff1a\u89aa\u30c6\u30fc\u30de\u306e\u30b9\u30bf\u30a4\u30eb\u30b7\u30fc\u30c8\u304c\u6b63\u3057\u304f\u8aad\u307f\u8fbc\u307e\u308c\u3066\u3044\u306a\u3044\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p><strong>\u89e3\u6c7a\u7b56<\/strong>\uff1a<code>functions.php<\/code> \u5185\u306e <code>wp_enqueue_style<\/code> \u306e\u8a18\u8ff0\u304c\u6b63\u3057\u3044\u304b\u78ba\u8a8d\u3057\u3001\u89aa\u30c6\u30fc\u30de\u306e\u30d5\u30a9\u30eb\u30c0\u540d\u304c <code>Template:<\/code> \u306e\u8a18\u8ff0\u3068\u4e00\u81f4\u3057\u3066\u3044\u308b\u304b\u30c1\u30a7\u30c3\u30af\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<h3>Q\uff1a\u30b9\u30de\u30fc\u30c8\u30d5\u30a9\u30f3\u3067\u3060\u3051\u30ec\u30a4\u30a2\u30a6\u30c8\u304c\u5d29\u308c\u308b<\/h3>\n<p><strong>\u539f\u56e0<\/strong>\uff1a\u30ec\u30b9\u30dd\u30f3\u30b7\u30d6\u30c7\u30b6\u30a4\u30f3\u306e\u30e1\u30c7\u30a3\u30a2\u30af\u30a8\u30ea\u304c\u6b63\u3057\u304f\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u306a\u3044\u3001\u307e\u305f\u306f\u89aa\u30c6\u30fc\u30de\u306e\u30e2\u30d0\u30a4\u30eb\u30b9\u30bf\u30a4\u30eb\u3068\u7af6\u5408\u3057\u3066\u3044\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p><strong>\u89e3\u6c7a\u7b56<\/strong>\uff1aChrome DevTools\u306e\u30c7\u30d0\u30a4\u30b9\u30e2\u30fc\u30c9\u3067\u78ba\u8a8d\u3057\u306a\u304c\u3089\u3001\u30e1\u30c7\u30a3\u30a2\u30af\u30a8\u30ea\u3092\u4f7f\u3063\u3066\u30e2\u30d0\u30a4\u30eb\u5411\u3051\u306e\u30b9\u30bf\u30a4\u30eb\u3092\u4e0a\u66f8\u304d\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<hr\/>\n<h2>\u307e\u3068\u3081\uff1aWordPress\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3092\u5b89\u5168\u306b\u9032\u3081\u308b\u305f\u3081\u306e5\u3064\u306e\u30dd\u30a4\u30f3\u30c8<\/h2><figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"1672\" height=\"941\" alt=\"\u307e\u3068\u3081\uff1aWordPress\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3092\u5b89\u5168\u306b\u9032\u3081\u308b\u305f\u3081\u306e5\u3064\u306e\u30dd\u30a4\u30f3\u30c8\" class=\"wp-image-24898\" src=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/09\/wordpress-theme-customize-css-child-h2-09-v2.jpg\" srcset=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/09\/wordpress-theme-customize-css-child-h2-09-v2.jpg 1672w, https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/09\/wordpress-theme-customize-css-child-h2-09-v2-768x432.jpg 768w, https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/09\/wordpress-theme-customize-css-child-h2-09-v2-1536x864.jpg 1536w\" sizes=\"(max-width: 1672px) 100vw, 1672px\" \/><\/figure>\n<ol>\n<li><strong>\u89aa\u30c6\u30fc\u30de\u3092\u76f4\u63a5\u7de8\u96c6\u3057\u306a\u3044<\/strong>\uff1a\u5fc5\u305a\u5b50\u30c6\u30fc\u30de\u3092\u4f5c\u6210\u3057\u3066\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3059\u308b<\/li>\n<li><strong>\u8efd\u5fae\u306a\u5909\u66f4\u306f\u30ab\u30b9\u30bf\u30de\u30a4\u30b6\u30fc\u306e\u8ffd\u52a0CSS\u3067\u5bfe\u5fdc<\/strong>\uff1a\u624b\u8efd\u304b\u3064\u5b89\u5168\u306b\u5909\u66f4\u3067\u304d\u308b<\/li>\n<li><strong>\u5927\u898f\u6a21\u306a\u5909\u66f4\u306ffunctions.php\u3068\u5b50\u30c6\u30fc\u30de\u306estyle.css\u3067\u5bfe\u5fdc<\/strong>\uff1a\u8a08\u753b\u7684\u306b\u9032\u3081\u308b<\/li>\n<li><strong>\u7de8\u96c6\u524d\u306b\u5fc5\u305a\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u3092\u53d6\u308b<\/strong>\uff1a\u4e07\u304c\u4e00\u306e\u969b\u306b\u5fa9\u5143\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b<\/li>\n<li><strong>\u30ed\u30fc\u30ab\u30eb\u74b0\u5883\u3067\u30c6\u30b9\u30c8\u3057\u3066\u304b\u3089\u672c\u756a\u74b0\u5883\u306b\u53cd\u6620<\/strong>\uff1a\u30c8\u30e9\u30d6\u30eb\u3092\u672a\u7136\u306b\u9632\u3050<\/li>\n<\/ol>\n<p>WordPress\u306e\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u306f\u3001\u6b63\u3057\u3044\u624b\u9806\u3068\u77e5\u8b58\u304c\u3042\u308c\u3070\u6c7a\u3057\u3066\u96e3\u3057\u304f\u3042\u308a\u307e\u305b\u3093\u3002\u307e\u305a\u306f\u5b50\u30c6\u30fc\u30de\u3092\u4f5c\u6210\u3057\u3001\u30ab\u30b9\u30bf\u30de\u30a4\u30b6\u30fc\u3067\u306e\u5c0f\u3055\u306a\u5909\u66f4\u304b\u3089\u59cb\u3081\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002\u6163\u308c\u3066\u304d\u305f\u3089CSS\u3084functions.php\u306b\u3082\u6311\u6226\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<div style=\"background-color: #f0f7ff; border-left: 4px solid #0073aa; padding: 20px; margin: 30px 0; border-radius: 4px;\">\n<p style=\"margin: 0 0 10px 0;\"><strong>\ud83c\udf93 WordPress\u3092\u3082\u3063\u3068\u6df1\u304f\u5b66\u3073\u305f\u3044\u65b9\u3078<\/strong><\/p>\n<p style=\"margin: 0 0 10px 0;\">WithCode\u3067\u306f\u3001WordPress\u306e\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u304b\u3089Web\u5236\u4f5c\u306e\u5b9f\u8df5\u30b9\u30ad\u30eb\u307e\u3067\u3001\u73fe\u5f79\u30a8\u30f3\u30b8\u30cb\u30a2\u304c\u4e01\u5be7\u306b\u6307\u5c0e\u3057\u3066\u3044\u307e\u3059\u3002\u5b50\u30c6\u30fc\u30de\u306e\u4f5c\u6210\u30fbCSS\u8a2d\u8a08\u30fbfunctions.php\u306e\u6d3b\u7528\u306a\u3069\u3001\u5b9f\u969b\u306e\u6848\u4ef6\u3067\u4f7f\u3048\u308b\u30b9\u30ad\u30eb\u3092\u6700\u77ed\u3067\u7fd2\u5f97\u3067\u304d\u307e\u3059\u3002<\/p>\n<p style=\"margin: 0;\"><a href=\"https:\/\/withcode.tech\/\" style=\"color: #0073aa; font-weight: bold; text-decoration: none;\">\u2192 WithCode\u306e\u30ab\u30ea\u30ad\u30e5\u30e9\u30e0\u3092\u898b\u3066\u307f\u308b<\/a><\/p>\n<\/div>\n<\/article>\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n<!-- withmedia-faq -->\n<h2 class=\"wp-block-heading\">\u3088\u304f\u3042\u308b\u8cea\u554f\uff08FAQ\uff09<\/h2><figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"1672\" height=\"941\" alt=\"\u3088\u304f\u3042\u308b\u8cea\u554f\uff08FAQ\uff09\" class=\"wp-image-24899\" src=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/09\/wordpress-theme-customize-css-child-h2-10-v2.jpg\" srcset=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/09\/wordpress-theme-customize-css-child-h2-10-v2.jpg 1672w, https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/09\/wordpress-theme-customize-css-child-h2-10-v2-768x432.jpg 768w, https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/09\/wordpress-theme-customize-css-child-h2-10-v2-1536x864.jpg 1536w\" sizes=\"(max-width: 1672px) 100vw, 1672px\" \/><\/figure>\n\n\n<h3 class=\"wp-block-heading\">Q1. \u306a\u305c\u30c6\u30fc\u30de\u3092\u76f4\u63a5\u7de8\u96c6\u3057\u3066\u306f\u3044\u3051\u306a\u3044\u306e\u3067\u3059\u304b\uff1f<\/h3>\n\n\n<p class=\"wp-block-paragraph\"><strong>A.<\/strong> \u30c6\u30fc\u30de\u3092\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3057\u305f\u77ac\u9593\u306b\u3001\u76f4\u63a5\u7de8\u96c6\u3057\u305f\u5185\u5bb9\u304c\u3059\u3079\u3066\u4e0a\u66f8\u304d\u3055\u308c\u3066\u6d88\u3048\u3066\u3057\u307e\u3046\u305f\u3081\u3067\u3059\u3002\u4eba\u6c17\u30c6\u30fc\u30de\u306f\u6708\u306b\u6570\u56de\u66f4\u65b0\u3055\u308c\u308b\u3053\u3068\u3082\u3042\u308a\u3001\u305d\u306e\u305f\u3073\u306b\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3092\u3084\u308a\u76f4\u3059\u306e\u306f\u73fe\u5b9f\u7684\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u8aa4\u3063\u305f\u30b3\u30fc\u30c9\u3067\u30b5\u30a4\u30c8\u304c\u771f\u3063\u767d\u306b\u306a\u308b\u30ea\u30b9\u30af\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n<h3 class=\"wp-block-heading\">Q2. \u5b50\u30c6\u30fc\u30de\u306f\u3069\u3046\u3084\u3063\u3066\u4f5c\u308a\u307e\u3059\u304b\uff1f<\/h3>\n\n\n<p class=\"wp-block-paragraph\"><strong>A.<\/strong> \u300c\u89aa\u30c6\u30fc\u30de\u540d-child\u300d\u3068\u3044\u3046\u540d\u524d\u306e\u30d5\u30a9\u30eb\u30c0\u3092\u4f5c\u308a\u3001\u305d\u306e\u4e2d\u306bstyle.css\uff08Template:\u306b\u89aa\u30c6\u30fc\u30de\u306e\u30d5\u30a9\u30eb\u30c0\u540d\u3092\u6b63\u78ba\u306b\u8a18\u8ff0\uff09\u3068functions.php\uff08\u89aa\u30c6\u30fc\u30de\u306e\u30b9\u30bf\u30a4\u30eb\u30b7\u30fc\u30c8\u3092\u8aad\u307f\u8fbc\u3080\u51e6\u7406\u3092\u8a18\u8ff0\uff09\u3092\u4f5c\u6210\u3057\u3001\u7ba1\u7406\u753b\u9762\u306e\u300c\u5916\u89b3\u2192\u30c6\u30fc\u30de\u300d\u304b\u3089\u6709\u52b9\u5316\u3057\u307e\u3059\u3002\u624b\u52d5\u304c\u96e3\u3057\u3044\u5834\u5408\u306f\u300cChild Theme Configurator\u300d\u30d7\u30e9\u30b0\u30a4\u30f3\u3067\u6570\u30af\u30ea\u30c3\u30af\u3067\u4f5c\u6210\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n<h3 class=\"wp-block-heading\">Q3. functions.php\u3092\u7de8\u96c6\u3059\u308b\u3068\u304d\u306e\u6ce8\u610f\u70b9\u306f\uff1f<\/h3>\n\n\n<p class=\"wp-block-paragraph\"><strong>A.<\/strong> \u69cb\u6587\u30df\u30b91\u3064\u3067\u30b5\u30a4\u30c8\u304c\u771f\u3063\u767d\u306b\u306a\u308b\u30ea\u30b9\u30af\u304c\u3042\u308a\u307e\u3059\u3002\u7de8\u96c6\u524d\u306b\u5fc5\u305a\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u3092\u53d6\u308a\u3001PHP\u306e\u9589\u3058\u30bf\u30b0\u300c?&gt;\u300d\u306f\u30d5\u30a1\u30a4\u30eb\u672b\u5c3e\u306b\u66f8\u304b\u305a\u3001\u30ed\u30fc\u30ab\u30eb\u74b0\u5883\uff08Local by Flywheel\u306a\u3069\uff09\u3067\u30c6\u30b9\u30c8\u3057\u3066\u304b\u3089\u672c\u756a\u74b0\u5883\u306b\u53cd\u6620\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n<h3 class=\"wp-block-heading\">Q4. CSS\u3092\u8ffd\u8a18\u3057\u3066\u3082\u53cd\u6620\u3055\u308c\u306a\u3044\u306e\u306f\u306a\u305c\u3067\u3059\u304b\uff1f<\/h3>\n\n\n<p class=\"wp-block-paragraph\"><strong>A.<\/strong> \u30d6\u30e9\u30a6\u30b6\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u304c\u6b8b\u3063\u3066\u3044\u308b\u304b\u3001\u8a18\u8ff0\u3057\u305f\u30bb\u30ec\u30af\u30bf\u306e\u8a73\u7d30\u5ea6\u304c\u89aa\u30c6\u30fc\u30de\u3088\u308a\u4f4e\u3044\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002Ctrl+Shift+R\u3067\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u30af\u30ea\u30a2\u3057\u3001Chrome DevTools\u3067\u9069\u5207\u306a\u30bb\u30ec\u30af\u30bf\u3092\u78ba\u8a8d\u3057\u307e\u3057\u3087\u3046\u3002\u3069\u3046\u3057\u3066\u3082\u53cd\u6620\u3055\u308c\u306a\u3044\u5834\u5408\u306f!important\u3092\u4f7f\u3044\u307e\u3059\u304c\u3001\u4e71\u7528\u306f\u907f\u3051\u307e\u3059\u3002<\/p>\n\n\n<h3 class=\"wp-block-heading\">Q5. 2026\u5e74\u306eWordPress\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u306e\u30c8\u30ec\u30f3\u30c9\u306f\u4f55\u3067\u3059\u304b\uff1f<\/h3>\n\n\n<p class=\"wp-block-paragraph\"><strong>A.<\/strong> \u30d5\u30eb\u30b5\u30a4\u30c8\u7de8\u96c6\uff08FSE\uff09\u3068\u30d6\u30ed\u30c3\u30af\u30c6\u30fc\u30de\u3078\u306e\u79fb\u884c\u3067\u3059\u3002\u30d6\u30ed\u30c3\u30af\u30c6\u30fc\u30de\u3067\u306fPHP\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u306e\u4ee3\u308f\u308a\u306bHTML\u30d9\u30fc\u30b9\u306e\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u3068\u30d6\u30ed\u30c3\u30af\u30a8\u30c7\u30a3\u30bf\u30fc\uff08Gutenberg\uff09\u3067\u30b5\u30a4\u30c8\u5168\u4f53\u3092\u7ba1\u7406\u3057\u3001theme.json\u3068\u3044\u3046\u30d5\u30a1\u30a4\u30eb\u3067\u8272\u30fb\u30d5\u30a9\u30f3\u30c8\u30fb\u4f59\u767d\u306a\u3069\u306e\u30c7\u30b6\u30a4\u30f3\u30c8\u30fc\u30af\u30f3\u3092\u4e00\u5143\u7ba1\u7406\u3057\u307e\u3059\u3002theme.json\u306e\u7406\u89e3\u306f\u307b\u307c\u5fc5\u9808\u30b9\u30ad\u30eb\u306b\u306a\u308a\u3064\u3064\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n<!-- withmedia-related -->\n<h2 class=\"wp-block-heading\">\u95a2\u9023\u8a18\u4e8b<\/h2><figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"1672\" height=\"941\" alt=\"\u95a2\u9023\u8a18\u4e8b\" class=\"wp-image-24900\" src=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/09\/wordpress-theme-customize-css-child-h2-11-v2.jpg\" srcset=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/09\/wordpress-theme-customize-css-child-h2-11-v2.jpg 1672w, https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/09\/wordpress-theme-customize-css-child-h2-11-v2-768x432.jpg 768w, https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/09\/wordpress-theme-customize-css-child-h2-11-v2-1536x864.jpg 1536w\" sizes=\"(max-width: 1672px) 100vw, 1672px\" \/><\/figure>\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/withcode.tech\/media\/engineer_hard_work\">\u3010\u30a8\u30f3\u30b8\u30cb\u30a2\u3011\u304d\u3064\u304f\u3066\u5927\u5909\uff01\u514b\u670d\u3059\u308b\u65b9\u6cd5\u3092\u89e3\u8aac\uff01<\/a><\/li>\n<li><a href=\"https:\/\/withcode.tech\/media\/web_product_develop_difference\">\u3010\u3053\u3093\u306a\u306b\u9055\u3046\uff01\u3011Web\u5236\u4f5c\u3068Web\u958b\u767a\u306e\u9055\u3044\u3092\u6bd4\u8f03\uff01<\/a><\/li>\n<li><a href=\"https:\/\/withcode.tech\/media\/web-engineer-future\/\">\u3010\u73fe\u5f79IT\u30a8\u30f3\u30b8\u30cb\u30a2\u304c\u89e3\u8aac\u3011Web\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u5c06\u6765\u306f\uff1f\u958b\u767a\u73fe\u5834\u306e\u73fe\u72b6\u3082\u5408\u308f\u305b\u3066\u89e3\u8aac\uff01<\/a><\/li>\n<li><a href=\"https:\/\/withcode.tech\/media\/wordpress-discord-integration\/\">WordPress\u3068Discord\u3092\u9023\u643a\u3055\u305b\u308b\u306b\u306f\uff1f\u52b9\u679c\u7684\u306a\u7d71\u5408\u65b9\u6cd5\u3092\u89e3\u8aac<\/a><\/li>\n<li><a href=\"https:\/\/withcode.tech\/media\/wordpress-custom-post-type\/\">WordPress\u306e\u30ab\u30b9\u30bf\u30e0\u6295\u7a3f\u3068\u306f\uff1f\u30d7\u30e9\u30b0\u30a4\u30f3\u300cCustom Post Type UI\u300d\u3067\u5b9f\u88c5\u3059\u308b\u65b9\u6cd5\u3092\u5fb9\u5e95\u89e3\u8aac\uff01<\/a><\/li>\n<li><a href=\"https:\/\/withcode.tech\/media\/grid-layout-webdesign\/\">CSS\u30b0\u30ea\u30c3\u30c9\u30ec\u30a4\u30a2\u30a6\u30c8\u5b8c\u5168\u30ac\u30a4\u30c9\u30102026\u5e74\u7248\u3011\u5b9f\u88c5\u4f8b\u4ed8\u304d<\/a><\/li>\n<li><a href=\"https:\/\/withcode.tech\/media\/css-short-code\/\">Web\u5236\u4f5c\u306b\u5f79\u7acb\u3064CSS\u5b9f\u88c5\u30b3\u30fc\u30c9\u30102026\u5e74\u7248\u3011\u77ed\u3044\u30b3\u30fc\u30c9\u3067\u304a\u3057\u3083\u308c\u306b<\/a><\/li>\n<\/ul>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n<!-- withmedia-references -->\n<h2 class=\"wp-block-heading\">\u53c2\u8003\u30ea\u30f3\u30af\uff08\u516c\u5f0f\u30fb\u4e00\u6b21\u60c5\u5831\uff09<\/h2><figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"1672\" height=\"941\" alt=\"\u53c2\u8003\u30ea\u30f3\u30af\uff08\u516c\u5f0f\u30fb\u4e00\u6b21\u60c5\u5831\uff09\" class=\"wp-image-24901\" src=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/09\/wordpress-theme-customize-css-child-h2-12-v2.jpg\" srcset=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/09\/wordpress-theme-customize-css-child-h2-12-v2.jpg 1672w, https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/09\/wordpress-theme-customize-css-child-h2-12-v2-768x432.jpg 768w, https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/09\/wordpress-theme-customize-css-child-h2-12-v2-1536x864.jpg 1536w\" sizes=\"(max-width: 1672px) 100vw, 1672px\" \/><\/figure>\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/ja.wordpress.org\/support\/\" rel=\"noopener noreferrer\" target=\"_blank\">WordPress \u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8<\/a><\/li>\n<li><a href=\"https:\/\/developer.mozilla.org\/ja\/docs\/Web\/HTML\" rel=\"noopener noreferrer\" target=\"_blank\">MDN Web Docs \u2014 HTML<\/a><\/li>\n<li><a href=\"https:\/\/developer.mozilla.org\/ja\/docs\/Web\/CSS\" rel=\"noopener noreferrer\" target=\"_blank\">MDN Web Docs \u2014 CSS<\/a><\/li>\n<li><a href=\"https:\/\/www.php.net\/manual\/ja\/\" rel=\"noopener noreferrer\" target=\"_blank\">PHP \u516c\u5f0f\u30de\u30cb\u30e5\u30a2\u30eb<\/a><\/li>\n<\/ul>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n<h2 class=\"wp-block-heading\">AI\u30b9\u30ad\u30eb\u3067\u3001\u672a\u6765\u306e\u81ea\u5206\u3092\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\uff01<\/h2>\n<figure class=\"wp-block-image aligncenter size-large\"><a href=\"https:\/\/s.lmes.jp\/landing-qr\/2010578884-C5To3Fmv?uLand=phzKXf\" rel=\"noopener noreferrer\" target=\"_blank\"><img decoding=\"async\" width=\"1672\" height=\"941\" alt=\"AI\u30b9\u30ad\u30eb\u3067\u3001\u672a\u6765\u306e\u81ea\u5206\u3092\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\uff01\" class=\"wp-image-24902\" src=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/09\/wordpress-theme-customize-css-child-h2-13-v2.jpg\" style=\"max-width:600px;width:100%;height:auto\" srcset=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/09\/wordpress-theme-customize-css-child-h2-13-v2.jpg 1672w, https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/09\/wordpress-theme-customize-css-child-h2-13-v2-768x432.jpg 768w, https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/09\/wordpress-theme-customize-css-child-h2-13-v2-1536x864.jpg 1536w\" sizes=\"(max-width: 1672px) 100vw, 1672px\" \/><\/a><\/figure>\n<h3 class=\"wp-block-heading\">\u4eca\u306a\u3089\u5b8c\u5168\u7121\u6599\u3067AI\u3092\u5b66\u3079\u308b\uff01<\/h3>\n<ul 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