{"id":19289,"date":"2026-07-28T13:57:33","date_gmt":"2026-07-28T13:57:33","guid":{"rendered":"https:\/\/withcode.tech\/media\/?p=19289"},"modified":"2026-07-28T14:59:54","modified_gmt":"2026-07-28T14:59:54","slug":"css-image-hover-zoom","status":"publish","type":"post","link":"https:\/\/withcode.tech\/media\/css-image-hover-zoom\/","title":{"rendered":"CSS\u753b\u50cf\u3092\u30db\u30d0\u30fc\u3067\u62e1\u5927\u30fb\u30ba\u30fc\u30e0\u3059\u308b\u65b9\u6cd5\uff5c\u304a\u3057\u3083\u308c\u6f14\u51fa\u30b3\u30d4\u30da"},"content":{"rendered":"<p><!-- roam:retrofit18209 --><\/p>\n<div class=\"swell-block-balloon\">\n<div class=\"c-balloon -bln-left\" data-col=\"gray\">\n<div class=\"c-balloon__icon -square\"><img decoding=\"async\" src=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2025\/06\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-06-15-14.40.37.jpg\" alt=\"\" class=\"c-balloon__iconImg\" width=\"80px\" height=\"80px\"><span class=\"c-balloon__iconName\">\u751f\u5f92<\/span><\/div>\n<div class=\"c-balloon__body -speaking -border-none\">\n<div class=\"c-balloon__text\">\n<p><strong>\u30b5\u30e0\u30cd\u30a4\u30eb\u753b\u50cf\u306b\u30de\u30a6\u30b9\u3092\u4e57\u305b\u305f\u3089\u3075\u308f\u3063\u3068\u62e1\u5927\u3059\u308b\u6f14\u51fa\u3001\u3069\u3046\u4f5c\u308b\u306e\u304c\u6b63\u89e3\u3067\u3059\u304b\uff1f<\/strong><\/p>\n<p><span class=\"c-balloon__shapes\"><span class=\"c-balloon__before\"><\/span><span class=\"c-balloon__after\"><\/span><\/span><\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"swell-block-balloon\">\n<div class=\"c-balloon -bln-right\" data-col=\"gray\">\n<div class=\"c-balloon__icon -square\"><img decoding=\"async\" src=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2025\/06\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-06-15-15.11.23.jpg\" alt=\"\" class=\"c-balloon__iconImg\" width=\"80px\" height=\"80px\"><span class=\"c-balloon__iconName\">\u30da\u30f3\u535a\u58eb<\/span><\/div>\n<div class=\"c-balloon__body -speaking -border-none\">\n<div class=\"c-balloon__text\">\n<p><strong>\u89aa\u8981\u7d20\u3092overflow:hidden\u306b\u3057\u3066\u3001\u753b\u50cf\u5074\u3092transform:scale()\u3067\u62e1\u5927\u3059\u308b\u306e\u304c\u5b9a\u756a\u3060\u3088\u3002\u4eca\u65e5\u306f\u30ad\u30e3\u30d7\u30b7\u30e7\u30f3\u8868\u793a\u3084\u30b0\u30ec\u30fc\u30b9\u30b1\u30fc\u30eb\u89e3\u9664\u3082\u4e00\u7dd2\u306b\u7d39\u4ecb\u3059\u308b\u306d\u3002<\/strong><\/p>\n<p><span class=\"c-balloon__shapes\"><span class=\"c-balloon__before\"><\/span><span class=\"c-balloon__after\"><\/span><\/span><\/div>\n<\/div>\n<\/div>\n<\/div>\n<p class=\"wp-block-paragraph\">\u30dd\u30fc\u30c8\u30d5\u30a9\u30ea\u30aa\u30b5\u30a4\u30c8\u3084\u30d6\u30ed\u30b0\u306e\u30b5\u30e0\u30cd\u30a4\u30eb\u753b\u50cf\u306b\u30db\u30d0\u30fc\u3067\u62e1\u5927\u30a8\u30d5\u30a7\u30af\u30c8\u3092\u4ed8\u3051\u305f\u3044\u2014\u2014\u305d\u3046\u601d\u3063\u305f\u3068\u304d\u3001JavaScript\u306f\u4e0d\u8981\u3067\u3059\u3002CSS\u306e<code>transform: scale()<\/code>\u3068<code>overflow: hidden<\/code>\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3060\u3051\u3067\u3001\u30af\u30ea\u30fc\u30f3\u3067\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u826f\u3044\u30ba\u30fc\u30e0\u30a8\u30d5\u30a7\u30af\u30c8\u304c\u5b9f\u88c5\u3067\u304d\u307e\u3059\u3002<\/p>\n<p class=\"wp-block-paragraph\">\u3053\u306e\u8a18\u4e8b\u3067\u306f\u57fa\u672c\u306e\u30ba\u30fc\u30e0\u304b\u3089\u59cb\u3081\u3001\u6697\u8ee2\u30aa\u30fc\u30d0\u30fc\u30ec\u30a4\u3068\u30ad\u30e3\u30d7\u30b7\u30e7\u30f3\u8868\u793a\u306e\u7d44\u307f\u5408\u308f\u305b\u3001filter\u306b\u3088\u308b\u30e2\u30ce\u30af\u30ed\u2192\u30ab\u30e9\u30fc\u5909\u63db\u3001\u30ab\u30fc\u30c9\u5168\u4f53\u30db\u30d0\u30fc\u3067\u753b\u50cf\u3060\u3051\u52d5\u304b\u3059\u624b\u6cd5\u307e\u3067\u3001\u305d\u306e\u307e\u307e\u30b3\u30d4\u30da\u3057\u3066\u4f7f\u3048\u308b\u30b3\u30fc\u30c9\u3092\u6bb5\u968e\u7684\u306b\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n<p class=\"wp-block-paragraph\">\u30a2\u30af\u30bb\u30b7\u30d3\u30ea\u30c6\u30a3\u9762\u3067\u30ad\u30fc\u30dc\u30fc\u30c9\u30d5\u30a9\u30fc\u30ab\u30b9\u6642\u306b\u3082\u540c\u3058\u6f14\u51fa\u3092\u767a\u706b\u3055\u305b\u308b\u5b9f\u88c5\u3082\u542b\u3081\u3066\u7d39\u4ecb\u3059\u308b\u306e\u3067\u3001\u5b9f\u52d9\u3067\u305d\u306e\u307e\u307e\u4f7f\u3048\u307e\u3059\u3002<\/p>\n<ul class=\"wp-block-list\">\n<li>overflow:hidden+transform:scale\u306b\u3088\u308b\u57fa\u672c\u30ba\u30fc\u30e0\u306e\u4ed5\u7d44\u307f<\/li>\n<li>\u6697\u8ee2\u30aa\u30fc\u30d0\u30fc\u30ec\u30a4\u3068\u30ad\u30e3\u30d7\u30b7\u30e7\u30f3\u306e\u30db\u30d0\u30fc\u8868\u793a<\/li>\n<li>filter: grayscale\u3067\u30e2\u30ce\u30af\u30ed\u2192\u30ab\u30e9\u30fc\u3078\u5909\u5316\u3055\u305b\u308b\u6f14\u51fa<\/li>\n<li>transition\u3067\u306a\u3081\u3089\u304b\u306a\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u306b\u4ed5\u4e0a\u3052\u308b\u30b3\u30c4<\/li>\n<li>\u30ab\u30fc\u30c9\u5168\u4f53\u30db\u30d0\u30fc\u3067\u753b\u50cf\u3060\u3051\u30ba\u30fc\u30e0\u3055\u305b\u308b\u5b9f\u88c5<\/li>\n<li>focus-visible\u306b\u3088\u308b\u30a2\u30af\u30bb\u30b7\u30d3\u30ea\u30c6\u30a3\u5bfe\u5fdc<\/li>\n<\/ul>\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n<h2 class=\"wp-block-heading\">\u30db\u30d0\u30fc\u30ba\u30fc\u30e0\u306e\u57fa\u672c\u539f\u7406<\/h2>\n<figure class=\"wp-block-image size-large\" data-dia=\"19289-1\"><img decoding=\"async\" width=\"1568\" height=\"389\" src=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/07\/dia-19289-1.png\" alt=\"\u30ba\u30fc\u30e0\u306e\u4ed5\u7d44\u307f\" class=\"wp-image-19390\" srcset=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/07\/dia-19289-1.png 1568w, https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/07\/dia-19289-1-768x191.png 768w, https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/07\/dia-19289-1-1536x381.png 1536w\" sizes=\"(max-width: 1568px) 100vw, 1568px\" \/><\/figure>\n<p class=\"wp-block-paragraph\">\u753b\u50cf\u306e\u30db\u30d0\u30fc\u30ba\u30fc\u30e0\u3092\u5b9f\u88c5\u3059\u308b\u524d\u306b\u3001\u4ed5\u7d44\u307f\u3092\u7406\u89e3\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002\u30dd\u30a4\u30f3\u30c8\u306f2\u3064\u3067\u3059\u3002<\/p>\n<ul class=\"wp-block-list\">\n<li><strong>overflow: hidden<\/strong> \u2014 \u89aa\u8981\u7d20\u306e\u5916\u306b\u306f\u307f\u51fa\u305f\u90e8\u5206\u3092\u96a0\u3059\u3002\u3053\u308c\u304c\u306a\u3044\u3068\u62e1\u5927\u3057\u305f\u753b\u50cf\u304c\u5468\u56f2\u306b\u306f\u307f\u51fa\u3059<\/li>\n<li><strong>transform: scale()<\/strong> \u2014 \u8981\u7d20\u3092\u62e1\u5927\u7e2e\u5c0f\u3059\u308b\u3002GPU\u51e6\u7406\u3055\u308c\u308b\u305f\u3081\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u826f\u3044<\/li>\n<\/ul>\n<figure class=\"wp-block-table\">\n<table>\n<thead>\n<tr>\n<th>\u30d7\u30ed\u30d1\u30c6\u30a3<\/th>\n<th>\u5f79\u5272<\/th>\n<th>\u8a2d\u5b9a\u3059\u308b\u8981\u7d20<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>overflow: hidden<\/td>\n<td>\u306f\u307f\u51fa\u305f\u753b\u50cf\u3092\u96a0\u3059<\/td>\n<td>\u89aa\u306ediv\uff08\u30e9\u30c3\u30d1\u30fc\uff09<\/td>\n<\/tr>\n<tr>\n<td>transform: scale(1.1)<\/td>\n<td>\u753b\u50cf\u3092110%\u306b\u62e1\u5927<\/td>\n<td>img\u30bf\u30b0<\/td>\n<\/tr>\n<tr>\n<td>transition: transform 0.3s<\/td>\n<td>\u306a\u3081\u3089\u304b\u306b\u5909\u5316\u3055\u305b\u308b<\/td>\n<td>img\u30bf\u30b0<\/td>\n<\/tr>\n<tr>\n<td>display: block<\/td>\n<td>\u753b\u50cf\u4e0b\u306e\u4f59\u767d\u3092\u306a\u304f\u3059<\/td>\n<td>img\u30bf\u30b0<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<p class=\"wp-block-paragraph\"><strong><span class=\"swl-marker mark_yellow\">img\u306bwidth:100%\u3068height:100%\u3092\u6307\u5b9a\u3057\u3066object-fit:cover\u3092\u4f7f\u3046\u3053\u3068\u3067\u3001\u89aa\u8981\u7d20\u306e\u30b5\u30a4\u30ba\u306b\u5408\u308f\u305b\u3066\u753b\u50cf\u304c\u5207\u308a\u629c\u304b\u308c\u3001\u6bd4\u7387\u304c\u5d29\u308c\u307e\u305b\u3093\u3002<\/span><\/strong>\u3053\u308c\u304c\u73fe\u4ee3\u7684\u306a\u30db\u30d0\u30fc\u30ba\u30fc\u30e0\u5b9f\u88c5\u306e\u57fa\u672c\u5f62\u3067\u3059\u3002<\/p>\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n<h2 class=\"wp-block-heading\">\u57fa\u672c\uff1a\u30b7\u30f3\u30d7\u30eb\u306a\u30db\u30d0\u30fc\u30ba\u30fc\u30e0<\/h2>\n<figure class=\"wp-block-image size-large\" data-dia=\"19289-2\"><img decoding=\"async\" width=\"1568\" height=\"588\" src=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/07\/dia-19289-2.png\" alt=\"\u57fa\u672c\u5b9f\u88c53\u30b9\u30c6\u30c3\u30d7\" class=\"wp-image-19391\" srcset=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/07\/dia-19289-2.png 1568w, https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/07\/dia-19289-2-768x288.png 768w, https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/07\/dia-19289-2-1536x576.png 1536w\" sizes=\"(max-width: 1568px) 100vw, 1568px\" \/><\/figure>\n<h3 class=\"wp-block-heading\">\u6700\u3082\u30b7\u30f3\u30d7\u30eb\u306a\u5b9f\u88c5<\/h3>\n<div class=\"hcb_wrap\">\n<pre class=\"prism line-numbers lang-html\" data-lang=\"HTML\"><code>&lt;div class=\"zoom-wrap\"&gt;\n  &lt;img src=\"image.jpg\" alt=\"\u30b5\u30f3\u30d7\u30eb\u753b\u50cf\" width=\"400\" height=\"300\"&gt;\n&lt;\/div&gt;<\/code><\/pre>\n<\/div>\n<div class=\"hcb_wrap\">\n<pre class=\"prism line-numbers lang-css\" data-lang=\"CSS\"><code>.zoom-wrap {\n  overflow: hidden;\n  width: 400px;\n  height: 300px;\n}\n\n.zoom-wrap img {\n  display: block;\n  width: 100%;\n  height: 100%;\n  object-fit: cover;\n  transition: transform 0.3s ease;\n}\n\n.zoom-wrap:hover img {\n  transform: scale(1.1);\n}<\/code><\/pre>\n<\/div>\n<p class=\"wp-block-paragraph\">\u3053\u308c\u3060\u3051\u3067\u52d5\u4f5c\u3057\u307e\u3059\u3002<code>scale(1.1)<\/code>\u306f110%\u3078\u306e\u62e1\u5927\u3067\u3059\u3002\u5024\u304c\u5927\u304d\u3044\u307b\u3069\u62e1\u5927\u5e45\u304c\u5897\u3057\u307e\u3059\u3002transition \u306e <code>0.3s<\/code> \u3092 <code>0.6s<\/code> \u306b\u3059\u308c\u3070\u3086\u3063\u304f\u308a\u3001<code>0.15s<\/code> \u306b\u3059\u308c\u3070\u30ad\u30ec\u306e\u3042\u308b\u52d5\u304d\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<h3 class=\"wp-block-heading\">ease\u30fbease-in-out\u30fbcubic\u3067\u5370\u8c61\u3092\u5909\u3048\u308b<\/h3>\n<div class=\"hcb_wrap\">\n<pre class=\"prism line-numbers lang-css\" data-lang=\"CSS\"><code>\/* \u6a19\u6e96\u7684\u306a\u30ba\u30fc\u30e0 *\/\n.zoom-default img {\n  transition: transform 0.3s ease;\n}\n\n\/* \u3086\u3063\u304f\u308a\u59cb\u307e\u3063\u3066\u3086\u3063\u304f\u308a\u7d42\u308f\u308b\u30fb\u4e0a\u54c1\u306a\u5370\u8c61 *\/\n.zoom-smooth img {\n  transition: transform 0.5s ease-in-out;\n}\n\n\/* \u30ab\u30b9\u30bf\u30e0\u30a4\u30fc\u30b8\u30f3\u30b0\uff1a\u6700\u521d\u306b\u5c11\u3057\u623b\u3063\u3066\u304b\u3089\u62e1\u5927\u3059\u308b\u30b9\u30d7\u30ea\u30f3\u30b0\u98a8 *\/\n.zoom-spring img {\n  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);\n}\n\n\/* \u6025\u306b\u59cb\u307e\u3063\u3066\u3086\u3063\u304f\u308a\u7d42\u308f\u308b\u30fb\u52e2\u3044\u306e\u3042\u308b\u5370\u8c61 *\/\n.zoom-bold img {\n  transition: transform 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);\n}\n\n.zoom-default:hover img,\n.zoom-smooth:hover img,\n.zoom-spring:hover img,\n.zoom-bold:hover img {\n  transform: scale(1.12);\n}<\/code><\/pre>\n<\/div>\n<p class=\"wp-block-paragraph\"><code>cubic-bezier(0.34, 1.56, 0.64, 1)<\/code>\u306f\u30d0\u30a6\u30f3\u30b9\u611f\u306e\u3042\u308b\u30b9\u30d7\u30ea\u30f3\u30b0\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u3067\u3001\u304a\u3057\u3083\u308c\u306a\u30dd\u30fc\u30c8\u30d5\u30a9\u30ea\u30aa\u30b5\u30a4\u30c8\u3067\u3088\u304f\u4f7f\u308f\u308c\u308b\u52d5\u304d\u3067\u3059\u3002<\/p>\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n<h2 class=\"wp-block-heading\">\u30ba\u30fc\u30e0\uff0b\u6697\u8ee2\u30aa\u30fc\u30d0\u30fc\u30ec\u30a4\uff0b\u30ad\u30e3\u30d7\u30b7\u30e7\u30f3\u8868\u793a<\/h2>\n<p class=\"wp-block-paragraph\">\u30dd\u30fc\u30c8\u30d5\u30a9\u30ea\u30aa\u3084\u30ae\u30e3\u30e9\u30ea\u30fc\u3067\u3088\u304f\u898b\u308b\u30d1\u30bf\u30fc\u30f3\u3067\u3059\u3002\u30db\u30d0\u30fc\u3059\u308b\u3068\u753b\u50cf\u304c\u6697\u304f\u306a\u308a\u3001\u4e2d\u592e\u306b\u30c6\u30ad\u30b9\u30c8\u304c\u73fe\u308c\u307e\u3059\u3002<\/p>\n<h3 class=\"wp-block-heading\">\u57fa\u672c\u306e\u30aa\u30fc\u30d0\u30fc\u30ec\u30a4\u30ad\u30e3\u30d7\u30b7\u30e7\u30f3<\/h3>\n<div class=\"hcb_wrap\">\n<pre class=\"prism line-numbers lang-html\" data-lang=\"HTML\"><code>&lt;div class=\"card-zoom\"&gt;\n  &lt;img src=\"image.jpg\" alt=\"\u4f5c\u54c1\u540d\" width=\"400\" height=\"300\"&gt;\n  &lt;div class=\"card-overlay\"&gt;\n    &lt;p class=\"card-caption\"&gt;\u4f5c\u54c1\u30bf\u30a4\u30c8\u30eb&lt;\/p&gt;\n    &lt;span class=\"card-tag\"&gt;Web Design&lt;\/span&gt;\n  &lt;\/div&gt;\n&lt;\/div&gt;<\/code><\/pre>\n<\/div>\n<div class=\"hcb_wrap\">\n<pre class=\"prism line-numbers lang-css\" data-lang=\"CSS\"><code>.card-zoom {\n  position: relative;\n  overflow: hidden;\n  width: 400px;\n  height: 300px;\n  border-radius: 8px;\n}\n\n.card-zoom img {\n  display: block;\n  width: 100%;\n  height: 100%;\n  object-fit: cover;\n  transition: transform 0.4s ease;\n}\n\n\/* \u30aa\u30fc\u30d0\u30fc\u30ec\u30a4\uff08\u521d\u671f\u72b6\u614b\u306f\u900f\u660e\uff09 *\/\n.card-overlay {\n  position: absolute;\n  inset: 0; \/* top:0 right:0 bottom:0 left:0 \u306e\u77ed\u7e2e *\/\n  background: rgba(0, 0, 0, 0);\n  display: flex;\n  flex-direction: column;\n  align-items: center;\n  justify-content: center;\n  gap: 8px;\n  transition: background 0.4s ease;\n}\n\n\/* \u30ad\u30e3\u30d7\u30b7\u30e7\u30f3\uff08\u521d\u671f\u72b6\u614b\u306f\u975e\u8868\u793a\uff09 *\/\n.card-caption {\n  color: #fff;\n  font-size: 1.25rem;\n  font-weight: 700;\n  margin: 0;\n  opacity: 0;\n  transform: translateY(10px);\n  transition: opacity 0.3s ease 0.1s, transform 0.3s ease 0.1s;\n}\n\n.card-tag {\n  color: rgba(255,255,255,0.8);\n  font-size: 0.85rem;\n  letter-spacing: 0.1em;\n  text-transform: uppercase;\n  opacity: 0;\n  transform: translateY(10px);\n  transition: opacity 0.3s ease 0.15s, transform 0.3s ease 0.15s;\n}\n\n\/* \u30db\u30d0\u30fc\u6642 *\/\n.card-zoom:hover img {\n  transform: scale(1.08);\n}\n\n.card-zoom:hover .card-overlay {\n  background: rgba(0, 0, 0, 0.55);\n}\n\n.card-zoom:hover .card-caption,\n.card-zoom:hover .card-tag {\n  opacity: 1;\n  transform: translateY(0);\n}<\/code><\/pre>\n<\/div>\n<p class=\"wp-block-paragraph\">\u30ad\u30e3\u30d7\u30b7\u30e7\u30f3\u306b<code>transition-delay<\/code>\u3092\u8a2d\u5b9a\u3057\u3066\u30c6\u30ad\u30b9\u30c8\u304c\u5c11\u3057\u9045\u308c\u3066\u73fe\u308c\u308b\u3088\u3046\u306b\u3059\u308b\u3068\u3001\u6f14\u51fa\u304c\u3088\u308a\u6d17\u7df4\u3055\u308c\u307e\u3059\u3002<code>.card-tag<\/code>\u306edelay\u3092<code>0.15s<\/code>\u306b\u3057\u3066\u30ba\u30ec\u3092\u4f5c\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<h3 class=\"wp-block-heading\">\u5de6\u304b\u3089\u53f3\u306b\u30b9\u30e9\u30a4\u30c9\u3059\u308b\u30aa\u30fc\u30d0\u30fc\u30ec\u30a4<\/h3>\n<div class=\"hcb_wrap\">\n<pre class=\"prism line-numbers lang-html\" data-lang=\"HTML\"><code>&lt;div class=\"card-slide\"&gt;\n  &lt;img src=\"image.jpg\" alt=\"\u4f5c\u54c1\u540d\" width=\"400\" height=\"300\"&gt;\n  &lt;div class=\"slide-overlay\"&gt;\n    &lt;p&gt;\u8a73\u3057\u304f\u898b\u308b \u2192&lt;\/p&gt;\n  &lt;\/div&gt;\n&lt;\/div&gt;<\/code><\/pre>\n<\/div>\n<div class=\"hcb_wrap\">\n<pre class=\"prism line-numbers lang-css\" data-lang=\"CSS\"><code>.card-slide {\n  position: relative;\n  overflow: hidden;\n  width: 400px;\n  height: 300px;\n}\n\n.card-slide img {\n  display: block;\n  width: 100%;\n  height: 100%;\n  object-fit: cover;\n  transition: transform 0.4s ease;\n}\n\n.slide-overlay {\n  position: absolute;\n  inset: 0;\n  background: rgba(209, 97, 118, 0.85);\n  display: flex;\n  align-items: center;\n  justify-content: center;\n  color: #fff;\n  font-size: 1.1rem;\n  \/* \u5de6\u5074\u304b\u3089\u5916\u308c\u305f\u4f4d\u7f6e\uff08translateX(-100%)\uff09\u306b\u521d\u671f\u914d\u7f6e *\/\n  transform: translateX(-100%);\n  transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);\n}\n\n.card-slide:hover img {\n  transform: scale(1.05);\n}\n\n.card-slide:hover .slide-overlay {\n  transform: translateX(0);\n}<\/code><\/pre>\n<\/div>\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n<h2 class=\"wp-block-heading\">filter\u3067\u30e2\u30ce\u30af\u30ed\u2192\u30ab\u30e9\u30fc\u3078\u5909\u5316\u3055\u305b\u308b<\/h2>\n<p class=\"wp-block-paragraph\">\u30c7\u30d5\u30a9\u30eb\u30c8\u3092\u30e2\u30ce\u30af\u30ed\u306b\u3057\u3066\u30db\u30d0\u30fc\u3067\u30ab\u30e9\u30fc\u306b\u5909\u5316\u3055\u305b\u308b\u30a8\u30d5\u30a7\u30af\u30c8\u306f\u3001\u30dd\u30fc\u30c8\u30d5\u30a9\u30ea\u30aa\u30b5\u30a4\u30c8\u3067\u7279\u306b\u4eba\u6c17\u306e\u3042\u308b\u6f14\u51fa\u3067\u3059\u3002<code>filter: grayscale()<\/code>\u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n<h3 class=\"wp-block-heading\">\u30b0\u30ec\u30fc\u30b9\u30b1\u30fc\u30eb\u2192\u30ab\u30e9\u30fc\uff08\u57fa\u672c\uff09<\/h3>\n<div class=\"hcb_wrap\">\n<pre class=\"prism line-numbers lang-html\" data-lang=\"HTML\"><code>&lt;div class=\"grayscale-wrap\"&gt;\n  &lt;img src=\"image.jpg\" alt=\"\u4f5c\u54c1\" width=\"400\" height=\"300\"&gt;\n&lt;\/div&gt;<\/code><\/pre>\n<\/div>\n<div class=\"hcb_wrap\">\n<pre class=\"prism line-numbers lang-css\" data-lang=\"CSS\"><code>.grayscale-wrap {\n  overflow: hidden;\n  width: 400px;\n  height: 300px;\n}\n\n.grayscale-wrap img {\n  display: block;\n  width: 100%;\n  height: 100%;\n  object-fit: cover;\n  \/* \u30c7\u30d5\u30a9\u30eb\u30c8\u306f\u30e2\u30ce\u30af\u30ed+\u5c11\u3057\u6697\u3081 *\/\n  filter: grayscale(100%) brightness(0.85);\n  transition:\n    filter 0.4s ease,\n    transform 0.4s ease;\n}\n\n.grayscale-wrap:hover img {\n  filter: grayscale(0%) brightness(1);\n  transform: scale(1.05);\n}<\/code><\/pre>\n<\/div>\n<h3 class=\"wp-block-heading\">\u30bb\u30d4\u30a2\u2192\u30ab\u30e9\u30fc\u306e\u7d44\u307f\u5408\u308f\u305b<\/h3>\n<div class=\"hcb_wrap\">\n<pre class=\"prism line-numbers lang-css\" data-lang=\"CSS\"><code>.sepia-wrap img {\n  display: block;\n  width: 100%;\n  height: 100%;\n  object-fit: cover;\n  filter: sepia(80%) contrast(0.9) brightness(0.9);\n  transition: filter 0.5s ease, transform 0.5s ease;\n}\n\n.sepia-wrap:hover img {\n  filter: sepia(0%) contrast(1) brightness(1);\n  transform: scale(1.06);\n}<\/code><\/pre>\n<\/div>\n<h3 class=\"wp-block-heading\">\u30d6\u30e9\u30fc\u2192\u30b7\u30e3\u30fc\u30d7\u306b\u30d5\u30a9\u30fc\u30ab\u30b9\u3059\u308b\u30a8\u30d5\u30a7\u30af\u30c8<\/h3>\n<p class=\"wp-block-paragraph\">\u30db\u30d0\u30fc\u524d\u306b\u307c\u304b\u3057\u3001\u30db\u30d0\u30fc\u3067\u30b7\u30e3\u30fc\u30d7\u306b\u306a\u308b\u6f14\u51fa\u3067\u3059\u3002<\/p>\n<div class=\"hcb_wrap\">\n<pre class=\"prism line-numbers lang-css\" data-lang=\"CSS\"><code>.blur-focus-wrap {\n  overflow: hidden;\n  width: 400px;\n  height: 300px;\n}\n\n.blur-focus-wrap img {\n  display: block;\n  width: 100%;\n  height: 100%;\n  object-fit: cover;\n  filter: blur(4px) brightness(0.8);\n  transform: scale(1.08); \/* \u307c\u304b\u3057\u3067\u30a8\u30c3\u30b8\u304c\u5207\u308c\u308b\u305f\u3081\u3042\u3089\u304b\u3058\u3081\u5927\u304d\u304f *\/\n  transition: filter 0.4s ease, transform 0.4s ease;\n}\n\n.blur-focus-wrap:hover img {\n  filter: blur(0px) brightness(1);\n  transform: scale(1.0);\n}<\/code><\/pre>\n<\/div>\n<p class=\"wp-block-paragraph\">\u307c\u304b\u3057\u3092\u4f7f\u3046\u969b\u306f\u3001\u3042\u3089\u304b\u3058\u3081\u753b\u50cf\u3092scale(1.08)\u7a0b\u5ea6\u3067\u62e1\u5927\u3057\u3066\u304a\u304b\u306a\u3044\u3068\u3001blur\u51e6\u7406\u3067\u30a8\u30c3\u30b8\u4ed8\u8fd1\u304c\u767d\u304f\u306a\u308a\u307e\u3059\u3002\u30db\u30d0\u30fc\u6642\u306bscale(1.0)\u306b\u623b\u3059\u3053\u3068\u3067\u81ea\u7136\u306a\u30d5\u30a9\u30fc\u30ab\u30b9\u611f\u304c\u751f\u307e\u308c\u307e\u3059\u3002<\/p>\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n<h2 class=\"wp-block-heading\">\u30ab\u30fc\u30c9\u5168\u4f53\u306e\u30db\u30d0\u30fc\u3067\u753b\u50cf\u3060\u3051\u30ba\u30fc\u30e0\u3055\u305b\u308b<\/h2>\n<p class=\"wp-block-paragraph\">\u3088\u304f\u3042\u308b\u30d6\u30ed\u30b0\u30ab\u30fc\u30c9\u3084\u30dd\u30fc\u30c8\u30d5\u30a9\u30ea\u30aa\u30b0\u30ea\u30c3\u30c9\u3067\u306f\u3001\u30ab\u30fc\u30c9\u5168\u4f53\u304c\u30af\u30ea\u30c3\u30ab\u30d6\u30eb\u3067\u3001\u30ab\u30fc\u30c9\u306b\u30db\u30d0\u30fc\u3057\u305f\u3068\u304d\u306b\u753b\u50cf\u3060\u3051\u304c\u30ba\u30fc\u30e0\u3059\u308b\u30d1\u30bf\u30fc\u30f3\u304c\u4f7f\u3044\u3084\u3059\u3044\u3067\u3059\u3002<\/p>\n<h3 class=\"wp-block-heading\">\u30d6\u30ed\u30b0\u30ab\u30fc\u30c9\u306e\u5b9f\u88c5<\/h3>\n<div class=\"hcb_wrap\">\n<pre class=\"prism line-numbers lang-html\" data-lang=\"HTML\"><code>&lt;a href=\"\/post\/1\" class=\"blog-card\"&gt;\n  &lt;div class=\"blog-card-thumb\"&gt;\n    &lt;img src=\"thumbnail.jpg\" alt=\"\u8a18\u4e8b\u30b5\u30e0\u30cd\u30a4\u30eb\" width=\"400\" height=\"225\"&gt;\n  &lt;\/div&gt;\n  &lt;div class=\"blog-card-body\"&gt;\n    &lt;span class=\"blog-card-cat\"&gt;CSS&lt;\/span&gt;\n    &lt;h2 class=\"blog-card-title\"&gt;\u8a18\u4e8b\u30bf\u30a4\u30c8\u30eb\u304c\u3053\u3053\u306b\u5165\u308a\u307e\u3059&lt;\/h2&gt;\n    &lt;p class=\"blog-card-date\"&gt;2026\u5e747\u670828\u65e5&lt;\/p&gt;\n  &lt;\/div&gt;\n&lt;\/a&gt;<\/code><\/pre>\n<\/div>\n<div class=\"hcb_wrap\">\n<pre class=\"prism line-numbers lang-css\" data-lang=\"CSS\"><code>.blog-card {\n  display: block;\n  text-decoration: none;\n  color: inherit;\n  border-radius: 12px;\n  overflow: hidden;\n  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);\n  transition: box-shadow 0.3s ease, transform 0.3s ease;\n  background: #fff;\n}\n\n\/* \u30ab\u30fc\u30c9\u3054\u3068\u308f\u305a\u304b\u306b\u6d6e\u304d\u4e0a\u304c\u308b *\/\n.blog-card:hover {\n  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);\n  transform: translateY(-4px);\n}\n\n.blog-card-thumb {\n  overflow: hidden;\n  aspect-ratio: 16 \/ 9;\n}\n\n.blog-card-thumb img {\n  display: block;\n  width: 100%;\n  height: 100%;\n  object-fit: cover;\n  transition: transform 0.4s ease;\n}\n\n\/* \u30ab\u30fc\u30c9\u30db\u30d0\u30fc\u6642\u306b\u753b\u50cf\u3060\u3051\u30ba\u30fc\u30e0 *\/\n.blog-card:hover .blog-card-thumb img {\n  transform: scale(1.08);\n}\n\n.blog-card-body {\n  padding: 16px 20px 20px;\n}\n\n.blog-card-cat {\n  display: inline-block;\n  background: #d16176;\n  color: #fff;\n  font-size: 0.75rem;\n  padding: 3px 10px;\n  border-radius: 4px;\n  margin-bottom: 8px;\n}\n\n.blog-card-title {\n  font-size: 1rem;\n  font-weight: 700;\n  line-height: 1.5;\n  margin: 0 0 8px;\n}\n\n.blog-card-date {\n  font-size: 0.8rem;\n  color: #888;\n  margin: 0;\n}<\/code><\/pre>\n<\/div>\n<h3 class=\"wp-block-heading\">\u30b0\u30ea\u30c3\u30c9\u30ec\u30a4\u30a2\u30a6\u30c8\u3067\u306e\u4f7f\u7528\u4f8b<\/h3>\n<div class=\"hcb_wrap\">\n<pre class=\"prism line-numbers lang-html\" data-lang=\"HTML\"><code>&lt;div class=\"card-grid\"&gt;\n  &lt;a href=\"\/post\/1\" class=\"blog-card\"&gt;&lt;!-- \u4e0a\u8a18\u3068\u540c\u3058\u69cb\u9020 --&gt;&lt;\/a&gt;\n  &lt;a href=\"\/post\/2\" class=\"blog-card\"&gt;&lt;\/a&gt;\n  &lt;a href=\"\/post\/3\" class=\"blog-card\"&gt;&lt;\/a&gt;\n&lt;\/div&gt;<\/code><\/pre>\n<\/div>\n<div class=\"hcb_wrap\">\n<pre class=\"prism line-numbers lang-css\" data-lang=\"CSS\"><code>.card-grid {\n  display: grid;\n  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));\n  gap: 24px;\n}\n\n@media (max-width: 640px) {\n  .card-grid {\n    grid-template-columns: 1fr;\n    gap: 16px;\n  }\n}<\/code><\/pre>\n<\/div>\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n<h2 class=\"wp-block-heading\">\u30a2\u30af\u30bb\u30b7\u30d3\u30ea\u30c6\u30a3\uff1afocus\u3067\u3082\u540c\u3058\u6f14\u51fa\u3092\u767a\u706b\u3055\u305b\u308b<\/h2>\n<figure class=\"wp-block-image size-large\" data-dia=\"19289-3\"><img decoding=\"async\" width=\"1568\" height=\"669\" src=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/07\/dia-19289-3.png\" alt=\"\u914d\u616e\u30dd\u30a4\u30f3\u30c8\" class=\"wp-image-19392\" srcset=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/07\/dia-19289-3.png 1568w, https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/07\/dia-19289-3-768x328.png 768w, https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/07\/dia-19289-3-1536x655.png 1536w\" sizes=\"(max-width: 1568px) 100vw, 1568px\" \/><\/figure>\n<p class=\"wp-block-paragraph\">\u30de\u30a6\u30b9\u64cd\u4f5c\u30e6\u30fc\u30b6\u30fc\u3060\u3051\u3067\u306a\u304f\u3001\u30ad\u30fc\u30dc\u30fc\u30c9\u30e6\u30fc\u30b6\u30fc\u3084\u652f\u63f4\u6280\u8853\u30e6\u30fc\u30b6\u30fc\u306b\u3082\u540c\u3058\u4f53\u9a13\u3092\u63d0\u4f9b\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<code>:focus-visible<\/code>\u3092\u4f7f\u3063\u3066\u30db\u30d0\u30fc\u3068\u540c\u3058\u30b9\u30bf\u30a4\u30eb\u3092\u30d5\u30a9\u30fc\u30ab\u30b9\u6642\u306b\u3082\u9069\u7528\u3057\u307e\u3059\u3002<\/p>\n<div class=\"hcb_wrap\">\n<pre class=\"prism line-numbers lang-css\" data-lang=\"CSS\"><code>\/* hover\u3068focus-visible\u3092\u4e26\u3079\u3066\u66f8\u304f *\/\n.zoom-wrap:hover img,\n.zoom-wrap:focus-visible img {\n  transform: scale(1.1);\n}\n\n\/* \u30ab\u30fc\u30c9\u306e\u5834\u5408 *\/\n.blog-card:hover,\n.blog-card:focus-visible {\n  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);\n  transform: translateY(-4px);\n}\n\n.blog-card:hover .blog-card-thumb img,\n.blog-card:focus-visible .blog-card-thumb img {\n  transform: scale(1.08);\n}\n\n\/* \u30d5\u30a9\u30fc\u30ab\u30b9\u30ea\u30f3\u30b0\u3092\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\uff08\u30c7\u30d5\u30a9\u30eb\u30c8\u306eoutline\u3092\u4e0a\u66f8\u304d\uff09 *\/\n.blog-card:focus-visible {\n  outline: 3px solid #d16176;\n  outline-offset: 2px;\n}\n\n\/* \u30aa\u30fc\u30d0\u30fc\u30ec\u30a4\u30ad\u30e3\u30d7\u30b7\u30e7\u30f3\u306b\u3082\u5bfe\u5fdc *\/\n.card-zoom:hover .card-overlay,\n.card-zoom:focus-visible .card-overlay {\n  background: rgba(0, 0, 0, 0.55);\n}\n\n.card-zoom:hover .card-caption,\n.card-zoom:focus-visible .card-caption,\n.card-zoom:hover .card-tag,\n.card-zoom:focus-visible .card-tag {\n  opacity: 1;\n  transform: translateY(0);\n}<\/code><\/pre>\n<\/div>\n<p class=\"wp-block-paragraph\"><code>:focus<\/code>\u3067\u306f\u306a\u304f<code>:focus-visible<\/code>\u3092\u4f7f\u3046\u306e\u304c\u30dd\u30a4\u30f3\u30c8\u3067\u3059\u3002<code>:focus<\/code>\u306f\u30af\u30ea\u30c3\u30af\u6642\u306b\u3082\u30d5\u30a9\u30fc\u30ab\u30b9\u30ea\u30f3\u30b0\u3092\u8868\u793a\u3057\u307e\u3059\u304c\u3001<code>:focus-visible<\/code>\u306f\u30ad\u30fc\u30dc\u30fc\u30c9\u64cd\u4f5c\u6642\u306e\u307f\u8868\u793a\u3059\u308b\u305f\u3081UX\u304c\u5411\u4e0a\u3057\u307e\u3059\u3002<\/p>\n<h3 class=\"wp-block-heading\">prefers-reduced-motion\u3078\u306e\u5bfe\u5fdc<\/h3>\n<div class=\"hcb_wrap\">\n<pre class=\"prism line-numbers lang-css\" data-lang=\"CSS\"><code>\/* \u52d5\u304d\u3092\u6e1b\u3089\u3059\u8a2d\u5b9a\u304cON\u306e\u5834\u5408\u306f\u30ba\u30fc\u30e0\u3057\u306a\u3044 *\/\n@media (prefers-reduced-motion: reduce) {\n  .zoom-wrap img,\n  .card-zoom img,\n  .blog-card-thumb img {\n    transition: none;\n  }\n\n  .zoom-wrap:hover img,\n  .card-zoom:hover img,\n  .blog-card:hover .blog-card-thumb img {\n    transform: none; \/* \u30ba\u30fc\u30e0\u3057\u306a\u3044 *\/\n  }\n\n  \/* \u30ba\u30fc\u30e0\u306e\u4ee3\u308f\u308a\u306bopacity\u3067\u5909\u5316\u3092\u4f1d\u3048\u308b *\/\n  .zoom-wrap:hover img {\n    opacity: 0.85;\n  }\n}<\/code><\/pre>\n<\/div>\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n<h2 class=\"wp-block-heading\">\u5931\u6557\u3057\u3084\u3059\u3044\u30dd\u30a4\u30f3\u30c8\u3068\u5bfe\u51e6\u6cd5<\/h2>\n<figure class=\"wp-block-image size-large\" data-dia=\"19289-4\"><img decoding=\"async\" width=\"1568\" height=\"669\" src=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/07\/dia-19289-4.png\" alt=\"\u3064\u307e\u305a\u304d\u2192\u5bfe\u51e6\" class=\"wp-image-19393\" srcset=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/07\/dia-19289-4.png 1568w, https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/07\/dia-19289-4-768x328.png 768w, https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/07\/dia-19289-4-1536x655.png 1536w\" sizes=\"(max-width: 1568px) 100vw, 1568px\" \/><\/figure>\n<figure class=\"wp-block-table\">\n<table>\n<thead>\n<tr>\n<th>\u554f\u984c<\/th>\n<th>\u539f\u56e0<\/th>\n<th>\u5bfe\u51e6\u6cd5<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u753b\u50cf\u304c\u67a0\u306e\u5916\u306b\u306f\u307f\u51fa\u3059<\/td>\n<td>overflow:hidden\u304c\u672a\u8a2d\u5b9a<\/td>\n<td>\u30e9\u30c3\u30d1\u30fcdiv\u306boverflow:hidden\u3092\u4ed8\u3051\u308b<\/td>\n<\/tr>\n<tr>\n<td>\u753b\u50cf\u304c\u7e26\u306b\u5f15\u304d\u4f38\u3073\u308b<\/td>\n<td>object-fit:cover\u304c\u672a\u8a2d\u5b9a<\/td>\n<td>img\u306bobject-fit:cover\u3092\u4ed8\u3051\u308b<\/td>\n<\/tr>\n<tr>\n<td>\u30ba\u30fc\u30e0\u304c\u30ab\u30af\u3064\u304f<\/td>\n<td>transform\u4ee5\u5916\u3092\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3<\/td>\n<td>transform\u3068opacity\u306e\u307f\u4f7f\u3046<\/td>\n<\/tr>\n<tr>\n<td>hover\u6642\u306b\u753b\u50cf\u304c\u307c\u3084\u3051\u308b<\/td>\n<td>Safari+\u5c0f\u6570\u70b9scale<\/td>\n<td>scale\u5024\u3092\u6574\u6570\u306b\u8fd1\u3044\u5024\u306b\u4e38\u3081\u308b<\/td>\n<\/tr>\n<tr>\n<td>\u30ad\u30e3\u30d7\u30b7\u30e7\u30f3\u304c\u898b\u3048\u306a\u3044<\/td>\n<td>z-index\u304c\u4e0d\u8db3<\/td>\n<td>overlay\u306bz-index:1\u3092\u4ed8\u3051\u308b<\/td>\n<\/tr>\n<tr>\n<td>transition \u304c\u52b9\u304b\u306a\u3044<\/td>\n<td>display:none\u304b\u3089\u306e\u5207\u308a\u66ff\u3048<\/td>\n<td>opacity\u3068visibility\u3092\u4f7f\u3046<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<h3 class=\"wp-block-heading\">display:none\u3067\u306f\u306a\u304fopacity+visibility\u3092\u4f7f\u3046<\/h3>\n<p class=\"wp-block-paragraph\">\u30ad\u30e3\u30d7\u30b7\u30e7\u30f3\u3092\u975e\u8868\u793a\u306b\u3059\u308b\u3068\u304d\u3001<code>display: none<\/code>\u306b\u3059\u308b\u3068transition\u304c\u52b9\u304d\u307e\u305b\u3093\u3002<code>opacity: 0<\/code>\u3068<code>visibility: hidden<\/code>\u306e\u7d44\u307f\u5408\u308f\u305b\u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n<div class=\"hcb_wrap\">\n<pre class=\"prism line-numbers lang-css\" data-lang=\"CSS\"><code>\/* NG: transition\u304c\u52b9\u304b\u306a\u3044 *\/\n.caption-ng {\n  display: none;\n}\n.wrap:hover .caption-ng {\n  display: block; \/* transition\u304c\u52b9\u304b\u306a\u3044 *\/\n}\n\n\/* OK: opacity\u3068visibility\u3067\u5236\u5fa1 *\/\n.caption-ok {\n  opacity: 0;\n  visibility: hidden;\n  transition: opacity 0.3s ease, visibility 0.3s ease;\n}\n.wrap:hover .caption-ok {\n  opacity: 1;\n  visibility: visible;\n}<\/code><\/pre>\n<\/div>\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n<p><!-- roam:retrofit18209-matome --><\/p>\n<h2 class=\"wp-block-heading\">\u307e\u3068\u3081<\/h2>\n<p class=\"wp-block-paragraph\">\u753b\u50cf\u30db\u30d0\u30fc\u30ba\u30fc\u30e0\u306f\u3001\u89aa\u3092overflow:hidden\u306b\u3057\u3066\u4e2d\u306e\u753b\u50cf\u3092transform:scale\u3067\u62e1\u5927\u3059\u308b\u306e\u304c\u57fa\u672c\u3067\u3059\u3002\u30dd\u30a4\u30f3\u30c8\u306f\u2460\u62e1\u5927\u306fscale\u3067transition\u306f0.3s\u524d\u5f8c\u2461\u30ad\u30e3\u30d7\u30b7\u30e7\u30f3\u306f\u30aa\u30fc\u30d0\u30fc\u30ec\u30a4\u3067\u91cd\u306d\u308b\u2462\u30b9\u30de\u30db\u306fhover\u304c\u52b9\u304b\u306a\u3044\u306e\u3067focus\u3084\u30bf\u30c3\u30d7\u3082\u8003\u616e\u3001\u306e3\u70b9\u3002\u3084\u308a\u3059\u304e\u305a\u4e0a\u54c1\u306a\u62e1\u5927\u7387\uff081.05\u301c1.1\uff09\u304c\u898b\u3084\u3059\u304f\u304a\u3059\u3059\u3081\u3067\u3059\u3002<\/p>\n<p><!-- withmedia-faq --><\/p>\n<h2 class=\"wp-block-heading\">\u3088\u304f\u3042\u308b\u8cea\u554f\uff08FAQ\uff09<\/h2>\n<h3 class=\"wp-block-heading\">transform: scale\u3068width\u3092\u76f4\u63a5\u5909\u66f4\u3059\u308b\u306e\u306f\u3069\u3046\u9055\u3044\u307e\u3059\u304b\uff1f<\/h3>\n<p class=\"wp-block-paragraph\">transform: scale\u306fGPU\u3067\u51e6\u7406\u3055\u308c\u308b\u305f\u3081\u30e1\u30a4\u30f3\u30b9\u30ec\u30c3\u30c9\u3078\u306e\u8ca0\u8377\u304c\u306a\u304f\u300160fps\u306e\u30b9\u30e0\u30fc\u30ba\u306a\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u3092\u7dad\u6301\u3067\u304d\u307e\u3059\u3002\u4e00\u65b9\u3001width\u3084height\u3092\u5909\u66f4\u3059\u308b\u3068\u518d\u30ec\u30a4\u30a2\u30a6\u30c8\uff08reflow\uff09\u304c\u767a\u751f\u3057\u3001\u4ed6\u306e\u8981\u7d20\u306e\u4f4d\u7f6e\u3082\u518d\u8a08\u7b97\u3055\u308c\u308b\u305f\u3081\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3078\u306e\u5f71\u97ff\u304c\u5927\u304d\u304f\u306a\u308a\u307e\u3059\u3002\u30db\u30d0\u30fc\u30ba\u30fc\u30e0\u306b\u306f\u5fc5\u305atransform: scale\u3092\u4f7f\u3063\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<h3 class=\"wp-block-heading\">\u30ba\u30fc\u30e0\u7387\u306f\u3069\u306e\u304f\u3089\u3044\u304c\u9069\u5207\u3067\u3059\u304b\uff1f<\/h3>\n<p class=\"wp-block-paragraph\">\u4e00\u822c\u7684\u306bscale(1.05)\u301cscale(1.15)\u306e\u7bc4\u56f2\u304c\u81ea\u7136\u3067\u3059\u3002scale(1.05)\u306f\u63a7\u3048\u3081\u3067\u4e0a\u54c1\u306a\u5370\u8c61\u3001scale(1.1)\u304c\u6a19\u6e96\u7684\u3001scale(1.15)\u4ee5\u4e0a\u306f\u30a4\u30f3\u30d1\u30af\u30c8\u304c\u5f37\u304f\u306a\u308a\u307e\u3059\u3002\u30b5\u30e0\u30cd\u30a4\u30eb\u753b\u50cf\u306b\u306f1.08\u301c1.1\u3001\u30d2\u30fc\u30ed\u30fc\u753b\u50cf\u3084\u30d5\u30eb\u30b9\u30af\u30ea\u30fc\u30f3\u80cc\u666f\u306b\u306f1.05\u7a0b\u5ea6\u304c\u9069\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<h3 class=\"wp-block-heading\">Safari\u3067\u753b\u50cf\u304c\u307c\u3084\u3051\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u5bfe\u51e6\u6cd5\u306f\uff1f<\/h3>\n<p class=\"wp-block-paragraph\">Safari\u306f\u30b5\u30d6\u30d4\u30af\u30bb\u30eb\u306etransform\u3092CPU\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3059\u308b\u5834\u5408\u304c\u3042\u308a\u3001\u5c0f\u6570\u70b9\u306e\u62e1\u5927\u7387\u3067\u307c\u3084\u3051\u304c\u751f\u3058\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<code>transform: translateZ(0)<\/code>\u3092img\u30bf\u30b0\u306b\u8ffd\u52a0\u3057\u3066GPU\u30ec\u30a4\u30e4\u30fc\u306b\u5f37\u5236\u6607\u683c\u3055\u305b\u308b\u304b\u3001<code>backface-visibility: hidden<\/code>\u3092\u4ed8\u4e0e\u3059\u308b\u3053\u3068\u3067\u6539\u5584\u3059\u308b\u30b1\u30fc\u30b9\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h3 class=\"wp-block-heading\">Next.js\uff08next\/image\uff09\u3084WordPress\u306e\u30a2\u30a4\u30ad\u30e3\u30c3\u30c1\u753b\u50cf\u3067\u3082\u540c\u3058\u5b9f\u88c5\u304c\u4f7f\u3048\u307e\u3059\u304b\uff1f<\/h3>\n<p class=\"wp-block-paragraph\">\u4f7f\u3048\u307e\u3059\u3002Next.js\u306enext\/image\u306fimg\u30bf\u30b0\u3092\u30e9\u30c3\u30d7\u3059\u308bdiv\u306boverflow\u304c\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u304c\u3042\u308b\u306e\u3067\u3001\u30b9\u30bf\u30a4\u30eb\u3092\u4e0a\u66f8\u304d\u3059\u308b\u969b\u306f\u89aa\u8981\u7d20\u306e\u30af\u30e9\u30b9\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002WordPress\u306e\u30a2\u30a4\u30ad\u30e3\u30c3\u30c1\u306fpost-thumbnail\u30af\u30e9\u30b9\u304c\u4ed8\u304f<code>img<\/code>\u30bf\u30b0\u306b\u5bfe\u3057\u3066<code>.blog-card:hover .post-thumbnail img<\/code>\u306e\u3088\u3046\u306b\u30bb\u30ec\u30af\u30bf\u30fc\u3092\u66f8\u3051\u3070\u540c\u69d8\u306b\u52d5\u4f5c\u3057\u307e\u3059\u3002<\/p>\n<h3 class=\"wp-block-heading\">\u30b9\u30de\u30fc\u30c8\u30d5\u30a9\u30f3\u3067hover\u306f\u52b9\u304d\u307e\u3059\u304b\uff1f<\/h3>\n<p class=\"wp-block-paragraph\">\u30bf\u30c3\u30c1\u30c7\u30d0\u30a4\u30b9\u306e\u30db\u30d0\u30fc\u52d5\u4f5c\u306f\u4e0d\u5b89\u5b9a\u3067\u3059\u3002\u30bf\u30c3\u30d7\u6642\u306b\u4e00\u77achover\u304c\u767a\u706b\u3059\u308b\u30d6\u30e9\u30a6\u30b6\u3082\u3042\u308c\u3070\u3001\u307e\u3063\u305f\u304f\u52b9\u304b\u306a\u3044\u3082\u306e\u3082\u3042\u308a\u307e\u3059\u3002\u30b9\u30de\u30fc\u30c8\u30d5\u30a9\u30f3\u3067\u306f\u300c\u30bf\u30c3\u30d7\u3057\u305f\u3089\u62e1\u5927\u300d\u306e\u6f14\u51fa\u306f\u4e0d\u81ea\u7136\u306b\u898b\u3048\u308b\u3053\u3068\u304c\u3042\u308b\u306e\u3067\u3001<code>@media (hover: hover)<\/code>\u30e1\u30c7\u30a3\u30a2\u30af\u30a8\u30ea\u3067\u300c\u771f\u306e\u30db\u30d0\u30fc\u53ef\u80fd\u30c7\u30d0\u30a4\u30b9\u306b\u306e\u307f\u9069\u7528\u3059\u308b\u300d\u3068\u5b89\u5168\u3067\u3059\u3002\u4f8b\uff1a<code>@media (hover: hover) { .zoom-wrap:hover img { transform: scale(1.1); } }<\/code><\/p>\n<p><!-- \/withmedia-faq --><\/p>\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n<!-- withmedia-related --><\/p>\n<h2 class=\"wp-block-heading\">\u3042\u308f\u305b\u3066\u8aad\u307f\u305f\u3044\u95a2\u9023\u8a18\u4e8b<\/h2>\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/withcode.tech\/media\/css-transition\/\">CSS transition\u306e\u4f7f\u3044\u65b9\uff5chover\u306e\u52d5\u304d\u3092\u306a\u3081\u3089\u304b\u306b<\/a><\/li>\n<li><a href=\"https:\/\/withcode.tech\/media\/css-animation-rotation\/\">CSS\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u56de\u8ee2\u3092\u5b8c\u5168\u30ac\u30a4\u30c9\uff5c\u57fa\u672c\u304b\u3089\u5fdc\u7528\u307e\u3067<\/a><\/li>\n<li><a href=\"https:\/\/withcode.tech\/media\/link-decoration\/\">CSS\u3067\u30ea\u30f3\u30af\u4e0b\u7dda\u3092\u6d88\u3059\u65b9\u6cd5\uff5c\u8272\u30fb\u592a\u3055\u30fb\u5f62\u72b6\u3092\u5b8c\u5168\u30ac\u30a4\u30c9<\/a><\/li>\n<\/ul>\n<h2 class=\"wp-block-heading\">CSS\u30fbWeb\u30c7\u30b6\u30a4\u30f3\u5b9f\u88c5\u306e\u7dcf\u307e\u3068\u3081<\/h2>\n<p class=\"wp-block-paragraph\">CSS\u306e\u5b9f\u88c5\u30c6\u30af\u30cb\u30c3\u30af\u3092\u300c\u30ec\u30a4\u30a2\u30a6\u30c8\u30fb\u88c5\u98fe\u30fb\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u30fb\u57fa\u790e\u30fb\u30c8\u30e9\u30d6\u30eb\u89e3\u6c7a\u300d\u306e\u76ee\u7684\u5225\u306b\u63a2\u305b\u308b\u7dcf\u307e\u3068\u3081\u30da\u30fc\u30b8\u3092\u7528\u610f\u3057\u3066\u3044\u307e\u3059\u3002\u5b9f\u88c5\u3067\u8ff7\u3063\u305f\u3068\u304d\u306e\u7d22\u5f15\u3068\u3057\u3066\u3069\u3046\u305e\u3002<\/p>\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/withcode.tech\/media\/css-webdesign-technique-map\/\">\u3010CSS\u5b9f\u88c5\u30c6\u30af\u30cb\u30c3\u30af\u5b8c\u5168\u30de\u30c3\u30d7\u3011\u30b3\u30d4\u30da\u3067\u4f7f\u3048\u308bWeb\u30c7\u30b6\u30a4\u30f3\u5b9f\u88c5\u30ac\u30a4\u30c9\u7dcf\u307e\u3068\u3081<\/a><\/li>\n<\/ul>\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\" target=\"_blank\" rel=\"noopener noreferrer\"><img decoding=\"async\" width=\"1254\" height=\"1254\" src=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/07\/withai-cta-banner.jpg\" alt=\"\u4eca\u306a\u3089\u5b8c\u5168\u7121\u6599\u3067AI\u3092\u5b66\u3079\u308b\uff01WithAI\" class=\"wp-image-18841\" style=\"max-width:600px;width:100%;height:auto\" srcset=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/07\/withai-cta-banner.jpg 1254w, https:\/\/withcode.tech\/media\/wp-content\/uploads\/2026\/07\/withai-cta-banner-768x768.jpg 768w\" sizes=\"(max-width: 1254px) 100vw, 1254px\" \/><\/a><\/figure>\n<h3 class=\"wp-block-heading\">\u4eca\u306a\u3089\u5b8c\u5168\u7121\u6599\u3067AI\u3092\u5b66\u3079\u308b\uff01<\/h3>\n<ul class=\"wp-block-list\">\n<li><strong>\u52d5\u753b\u3084\u5b9f\u8df5\u3067\u697d\u3057\u304f\u5b66\u3079\u308b<\/strong>\uff1a\u521d\u5fc3\u8005\u3067\u3082\u5b89\u5fc3\u306e\u30ab\u30ea\u30ad\u30e5\u30e9\u30e0<\/li>\n<li><strong>\u30b9\u30de\u30db\u30fbPC\u3069\u3061\u3089\u3067\u3082OK<\/strong>\uff1a\u597d\u304d\u306a\u6642\u9593\u306b\u5b66\u7fd2\u3067\u304d\u308b<\/li>\n<li><strong>\u6599\u91d1\u306f\u4e00\u5207\u30ca\u30b7<\/strong>\uff1a<span class=\"swl-marker 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