{"id":1307,"date":"2025-03-19T15:02:01","date_gmt":"2025-03-19T06:02:01","guid":{"rendered":"https:\/\/route-zero.com\/recruit\/route\/1307\/"},"modified":"2025-07-11T17:10:09","modified_gmt":"2025-07-11T08:10:09","slug":"1307","status":"publish","type":"route","link":"https:\/\/route-zero.com\/recruit\/route\/1307\/","title":{"rendered":"rem\u3068px\u306e\u9055\u3044\u3068\u306f\uff1fCSS\u8a2d\u8a08\u3067\u8ff7\u308f\u306a\u3044\u4f7f\u3044\u5206\u3051\u30eb\u30fc\u30eb\u3068\u5b9f\u8df5\u4f8b\u3092\u89e3\u8aac"},"content":{"rendered":"<div>\n<h3>\u3088\u304f\u3042\u308b\u60a9\u307f\uff5crem\u3068px\u3001\u7d50\u5c40\u3069\u3063\u3061\u3092\u4f7f\u3048\u3070\u3044\u3044\u306e\uff1f<\/h3>\n<p>\u300cpx\u3067\u6307\u5b9a\u3057\u305f\u306e\u306b\u3001\u30b9\u30de\u30db\u3067\u306f\u6587\u5b57\u304c\u5c0f\u3055\u3059\u304e\u3066\u8aad\u307f\u306b\u304f\u3044\u300d\u300crem\u304c\u3044\u3044\u3068\u805e\u3044\u305f\u3051\u3069\u3001\u306a\u305c\u306a\u306e\u304b\u3088\u304f\u5206\u304b\u3089\u306a\u3044\u300d\u3002Web\u5236\u4f5c\u3092\u59cb\u3081\u305f\u3070\u304b\u308a\u306e\u65b9\u3084\u73fe\u5834\u3067\u8a2d\u8a08\u30eb\u30fc\u30eb\u306b\u60a9\u3080\u30a8\u30f3\u30b8\u30cb\u30a2\u306b\u3068\u3063\u3066\u3001CSS\u306e\u5358\u4f4d\u9078\u3073\u306f\u601d\u3063\u305f\u4ee5\u4e0a\u306b\u91cd\u8981\u3067\u3059\u3002<\/p>\n<p>\u672c\u8a18\u4e8b\u3067\u306f\u3001CSS\u3067\u4f7f\u308f\u308c\u308b2\u3064\u306e\u4e3b\u8981\u5358\u4f4d\u300cpx\u300d\u3068\u300crem\u300d\u306b\u3064\u3044\u3066\u3001\u521d\u5fc3\u8005\u306b\u3082\u308f\u304b\u308a\u3084\u3059\u304f\u4ed5\u7d44\u307f\u3092\u89e3\u8aac\u3057\u306a\u304c\u3089\u3001\u5b9f\u52d9\u3067\u306e\u30d9\u30b9\u30c8\u306a\u4f7f\u3044\u5206\u3051\u3092\u63d0\u6848\u3057\u307e\u3059\u3002\u30a2\u30af\u30bb\u30b7\u30d3\u30ea\u30c6\u30a3\u3084\u30b9\u30b1\u30fc\u30e9\u30d3\u30ea\u30c6\u30a3\u3092\u610f\u8b58\u3057\u305f\u8a2d\u8a08\u3092\u3057\u305f\u3044\u65b9\u306b\u304a\u3059\u3059\u3081\u3067\u3059\u3002<\/p>\n<hr>\n<h3>\u8a18\u4e8b\u3067\u5f97\u3089\u308c\u308b\u3053\u3068<\/h3>\n<ul>\n<li>\n<p>\u300cpx\u300d\u3068\u300crem\u300d\u306e\u4ed5\u7d44\u307f\u30fb\u9055\u3044\u3092\u7406\u89e3\u3067\u304d\u308b<\/p>\n<\/li>\n<li>\n<p>\u5b9f\u52d9\u3067\u4f7f\u3044\u5206\u3051\u308b\u969b\u306e\u5224\u65ad\u57fa\u6e96\u304c\u308f\u304b\u308b<\/p>\n<\/li>\n<li>\n<p>\u30b9\u30b1\u30fc\u30e9\u30d6\u30eb\u306aUI\u8a2d\u8a08\u306b\u5f79\u7acb\u3064\u8a2d\u8a08\u30d1\u30bf\u30fc\u30f3\u304c\u624b\u306b\u5165\u308b<\/p>\n<\/li>\n<\/ul>\n<hr>\n<h2>CSS\u5358\u4f4d\u306e\u57fa\u790e\uff5c\u300crem\u300d\u3068\u300cpx\u300d\u306e\u4ed5\u7d44\u307f\u3092\u3084\u3055\u3057\u304f\u89e3\u8aac<\/h2>\n<h3>CSS \u5358\u4f4d px\u3068\u306f\uff1f\u30d4\u30af\u30bb\u30eb\u306e\u57fa\u672c<\/h3>\n<p>\u300cpx\u300d\u306f\u753b\u9762\u4e0a\u306e\u30d4\u30af\u30bb\u30eb\u306b\u57fa\u3065\u304f<strong>\u7d76\u5bfe\u5358\u4f4d<\/strong>\u3067\u3059\u3002\u305f\u3068\u3048\u3070\u4ee5\u4e0b\u306e\u6307\u5b9a\uff1a<\/p>\n<pre><code>font-size: 16px;<\/code><\/pre>\n<p>\u3053\u306e\u6307\u5b9a\u306f\u3001\u5e38\u306b16\u30d4\u30af\u30bb\u30eb\u306e\u9ad8\u3055\u3067\u8868\u793a\u3055\u308c\u3001\u30e6\u30fc\u30b6\u30fc\u8a2d\u5b9a\u306b\u306f\u5f71\u97ff\u3055\u308c\u307e\u305b\u3093\u3002<\/p>\n<ul>\n<li>\n<p>\u30e1\u30ea\u30c3\u30c8\uff1a\u30c7\u30b6\u30a4\u30f3\u901a\u308a\u306e\u518d\u73fe\u6027\u304c\u9ad8\u3044<\/p>\n<\/li>\n<li>\n<p>\u30c7\u30e1\u30ea\u30c3\u30c8\uff1a\u30e6\u30fc\u30b6\u30fc\u306e\u6587\u5b57\u30b5\u30a4\u30ba\u8a2d\u5b9a\u3084\u9ad8\u89e3\u50cf\u5ea6\u30c7\u30a3\u30b9\u30d7\u30ec\u30a4\u306b\u5bfe\u5fdc\u3057\u306b\u304f\u3044<\/p>\n<\/li>\n<\/ul>\n<h3>CSS \u5358\u4f4d rem\u3068\u306f\uff1f\u30eb\u30fc\u30c8\u57fa\u6e96\u306e\u76f8\u5bfe\u6307\u5b9a<\/h3>\n<p>\u300crem\u300d\u306f<strong>\u76f8\u5bfe\u5358\u4f4d<\/strong>\u3067\u3001HTML\u306e\u30eb\u30fc\u30c8\u8981\u7d20\uff08html\uff09\u306b\u6307\u5b9a\u3055\u308c\u305ffont-size\u3092\u57fa\u6e96\u306b\u30b5\u30a4\u30ba\u304c\u6c7a\u307e\u308a\u307e\u3059\u3002<\/p>\n<pre><code><span>html<\/span> {\r\n  <span>font-size<\/span>: <span>16px<\/span>;\r\n}\r\n<span>p<\/span> {\r\n  <span>font-size<\/span>: <span>1.5rem<\/span>; <span>\/* \u2192 24px\u76f8\u5f53 *\/<\/span>\r\n}<\/code><\/pre>\n<p>\u3053\u306e\u3088\u3046\u306brem\u3092\u4f7f\u3048\u3070\u3001\u30eb\u30fc\u30c8\u306e\u6307\u5b9a\u3092\u5909\u3048\u308b\u3060\u3051\u3067\u5168\u4f53\u306e\u30b9\u30b1\u30fc\u30eb\u8abf\u6574\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n<ul>\n<li>\n<p>\u30e1\u30ea\u30c3\u30c8\uff1a\u4e00\u62ec\u8abf\u6574\u3084\u30e6\u30fc\u30b6\u30fc\u8a2d\u5b9a\u306b\u8ffd\u5f93\u3057\u3084\u3059\u304f\u3001\u30b9\u30b1\u30fc\u30e9\u30d3\u30ea\u30c6\u30a3\u306b\u512a\u308c\u308b<\/p>\n<\/li>\n<li>\n<p>\u30c7\u30e1\u30ea\u30c3\u30c8\uff1a\u57fa\u6e96\u5024\u3092\u628a\u63e1\u3057\u3066\u3044\u306a\u3044\u3068\u30b5\u30a4\u30ba\u611f\u304c\u3064\u304b\u307f\u306b\u304f\u3044<\/p>\n<\/li>\n<\/ul>\n<h3>rem\u3068em\u306e\u9055\u3044\uff5c\u968e\u5c64\u3067\u5909\u308f\u308bem\u3001\u4e00\u5b9a\u306arem<\/h3>\n<ul>\n<li>\n<p>em\u306f<strong>\u89aa\u8981\u7d20<\/strong>\u306b\u5bfe\u3059\u308b\u76f8\u5bfe\u6307\u5b9a \u2192 \u30cd\u30b9\u30c8\u304c\u6df1\u3044\u3068\u30b5\u30a4\u30ba\u304c\u5d29\u308c\u3084\u3059\u3044<\/p>\n<\/li>\n<li>\n<p>rem\u306f<strong>\u30eb\u30fc\u30c8\u8981\u7d20<\/strong>\u306b\u5bfe\u3059\u308b\u76f8\u5bfe\u6307\u5b9a \u2192 \u4e00\u8cab\u6027\u304c\u4fdd\u3061\u3084\u3059\u3044<\/p>\n<\/li>\n<\/ul>\n<pre><code><span>html<\/span> {\r\n  <span>font-size<\/span>: <span>16px<\/span>;\r\n}\r\n<span>h1<\/span> {\r\n  <span>font-size<\/span>: <span>2rem<\/span>; <span>\/* \u2192 \u5e38\u306b32px *\/<\/span>\r\n}<\/code><\/pre>\n<p>\u3053\u306e\u3088\u3046\u306b\u3001rem\u306f\u3069\u306e\u968e\u5c64\u306b\u3044\u3066\u3082\u30b5\u30a4\u30ba\u304c\u30d6\u30ec\u306a\u3044\u306e\u304c\u7279\u5fb4\u3067\u3059\u3002<\/p>\n<h3>\u5b9f\u52d9\u3067\u62bc\u3055\u3048\u3066\u304a\u304d\u305f\u3044\u524d\u63d0\u77e5\u8b58<\/h3>\n<ul>\n<li>\n<p>\u30d6\u30e9\u30a6\u30b6\u306e\u521d\u671f\u8a2d\u5b9a\u306f html { font-size: 16px; } \u304c\u4e00\u822c\u7684<\/p>\n<\/li>\n<li>\n<p>rem\u306f\u30e6\u30fc\u30b6\u30fc\u306e\u6587\u5b57\u62e1\u5927\u8a2d\u5b9a\u3092\u5c0a\u91cd\u3067\u304d\u3001\u30a2\u30af\u30bb\u30b7\u30d3\u30ea\u30c6\u30a3\u306e\u9ad8\u3044UI\u8a2d\u8a08\u306b\u5411\u3044\u3066\u3044\u308b<\/p>\n<\/li>\n<li>\n<p>\u7279\u306b\u30d5\u30a9\u30f3\u30c8\u30b5\u30a4\u30ba\u3084\u4f59\u767d\u8a2d\u8a08\u306brem\u306f\u6709\u52b9<\/p>\n<\/li>\n<\/ul>\n<hr>\n<h2>rem\u3068px\u306e\u4f7f\u3044\u5206\u3051\uff5c\u73fe\u5834\u3067\u3088\u304f\u3042\u308b\u8aa4\u308a\u3068\u305d\u306e\u89e3\u6c7a\u6cd5<\/h2>\n<h3>\u3088\u304f\u3042\u308b\u5931\u6557\uff1a\u3059\u3079\u3066px\u3067\u8a18\u8ff0\u3057\u3066\u3057\u307e\u3046<\/h3>\n<pre><code><span>.card-title<\/span> {\r\n  <span>font-size<\/span>: <span>24px<\/span>;\r\n}\r\n<span>.card-text<\/span> {\r\n  <span>font-size<\/span>: <span>14px<\/span>;\r\n}<\/code><\/pre>\n<p>\u3053\u306e\u3088\u3046\u306b\u5168\u3066px\u6307\u5b9a\u3059\u308b\u3068\u3001\u30e6\u30fc\u30b6\u30fc\u306e\u62e1\u5927\u8a2d\u5b9a\u304c\u7121\u52b9\u306b\u306a\u308a\u3001\u53ef\u8aad\u6027\u3084\u30a2\u30af\u30bb\u30b7\u30d3\u30ea\u30c6\u30a3\u304c\u640d\u306a\u308f\u308c\u307e\u3059\u3002<\/p>\n<h3>\u6539\u5584\u30d1\u30bf\u30fc\u30f3\uff1arem\u3092\u30d9\u30fc\u30b9\u306b\u3057\u3066px\u3067\u5fae\u8abf\u6574<\/h3>\n<pre><code><span>html<\/span> {\r\n  <span>font-size<\/span>: <span>100%<\/span>;\r\n}\r\n<span>.card-title<\/span> {\r\n  <span>font-size<\/span>: <span>1.5rem<\/span>; <span>\/* \u2192 24px\u76f8\u5f53 *\/<\/span>\r\n}\r\n<span>.card-text<\/span> {\r\n  <span>font-size<\/span>: <span>0.875rem<\/span>; <span>\/* \u2192 14px\u76f8\u5f53 *\/<\/span>\r\n}<\/code><\/pre>\n<p>rem\u3067\u57fa\u672c\u30b9\u30b1\u30fc\u30eb\u3092\u7ba1\u7406\u3057\u3064\u3064\u3001\u5fc5\u8981\u306a\u90e8\u5206\u306b\u3060\u3051px\u3067\u56fa\u5b9a\u5024\u3092\u88dc\u5b8c\u3059\u308b\u306e\u304c\u5b9f\u8df5\u7684\u306a\u30a2\u30d7\u30ed\u30fc\u30c1\u3067\u3059\u3002<\/p>\n<h3>rem\u3068px\u306e\u68f2\u307f\u5206\u3051\u30eb\u30fc\u30eb<\/h3>\n<ul>\n<li>\n<p>rem\uff1a<strong>\u30d5\u30a9\u30f3\u30c8\u30b5\u30a4\u30ba\u3001\u30de\u30fc\u30b8\u30f3\u3001\u30d1\u30c7\u30a3\u30f3\u30b0<\/strong>\uff08\u5168\u4f53\u8a2d\u8a08\u306e\u67d4\u8edf\u6027\u3092\u62c5\u4fdd\uff09<\/p>\n<\/li>\n<li>\n<p>px\uff1a<strong>\u30dc\u30fc\u30c0\u30fc\u5e45\u3001\u30a2\u30a4\u30b3\u30f3\u30b5\u30a4\u30ba\u3001\u7d30\u90e8\u306e\u88c5\u98fe<\/strong>\uff08\u898b\u305f\u76ee\u306e\u7cbe\u5ea6\u3092\u91cd\u8996\uff09<\/p>\n<\/li>\n<\/ul>\n<hr>\n<h2>\u30c7\u30b6\u30a4\u30f3\u30c4\u30fc\u30eb\u3068\u306e\u9023\u643a\uff5cpx\u304b\u3089rem\u3078\u306e\u5909\u63db\u306b\u6ce8\u610f<\/h2>\n<p>Figma\u3084Adobe XD\u306a\u3069\u306e\u30c7\u30b6\u30a4\u30f3\u30c4\u30fc\u30eb\u3067\u306fpx\u3067\u8a2d\u8a08\u3055\u308c\u308b\u3053\u3068\u304c\u591a\u3044\u305f\u3081\u3001\u5b9f\u88c5\u6642\u306b\u306frem\u3078\u306e\u5909\u63db\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n<ul>\n<li>\n<p>\u5b9f\u88c5\u30eb\u30fc\u30eb\uff08\u4f8b\uff1a1rem = 16px\uff09\u3092\u30c1\u30fc\u30e0\u5185\u3067\u5171\u6709\u3057\u3066\u304a\u304f\u3068\u6df7\u4e71\u304c\u6e1b\u308b<\/p>\n<\/li>\n<li>\n<p>\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u5358\u4f4d\u3067\u306e\u8a2d\u8a08\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u306b\u300crem\u63db\u7b97\u8868\u300d\u306a\u3069\u3092\u7528\u610f\u3059\u308b\u306e\u3082\u304a\u3059\u3059\u3081<\/p>\n<\/li>\n<\/ul>\n<hr>\n<h2>\u307e\u3068\u3081\u3068\u5b9f\u8df5\u30a2\u30af\u30b7\u30e7\u30f3<\/h2>\n<h3>\u5b66\u3093\u3060\u3053\u3068\u306e\u6574\u7406<\/h3>\n<ul>\n<li>\n<p>\u300cpx\u300d\u306f\u56fa\u5b9a\u8868\u793a\u306b\u512a\u308c\u308b\u304c\u3001\u62e1\u5927\u7e2e\u5c0f\u306b\u5f31\u304f\u30b9\u30b1\u30fc\u30e9\u30d3\u30ea\u30c6\u30a3\u306b\u6b20\u3051\u308b<\/p>\n<\/li>\n<li>\n<p>\u300crem\u300d\u306f\u76f8\u5bfe\u6307\u5b9a\u3067\u3001\u30e6\u30fc\u30b6\u30fc\u8a2d\u5b9a\u3084\u5168\u4f53\u30b9\u30b1\u30fc\u30eb\u306b\u67d4\u8edf\u306b\u5bfe\u5fdc\u3067\u304d\u308b<\/p>\n<\/li>\n<li>\n<p>\u5b9f\u52d9\u3067\u306f\u300crem\u30d9\u30fc\u30b9\uff0b\u5fc5\u8981\u306apx\u88dc\u5b8c\u300d\u304c\u6700\u9069\u89e3<\/p>\n<\/li>\n<li>\n<p>\u300cem\u300d\u306f\u67d4\u8edf\u3060\u304c\u30cd\u30b9\u30c8\u3067\u5d29\u308c\u3084\u3059\u304f\u3001\u518d\u5229\u7528\u6027\u3092\u91cd\u8996\u3059\u308b\u306a\u3089rem\u304c\u5b89\u5b9a<\/p>\n<\/li>\n<\/ul>\n<h3>\u6b21\u306b\u3084\u3063\u3066\u307f\u3088\u3046<\/h3>\n<ul>\n<li>\n<p>\u65e2\u5b58\u306eCSS\u8a2d\u8a08\u3092\u898b\u76f4\u3057\u3066\u3001rem\u30d9\u30fc\u30b9\u3078\u306e\u30ea\u30d5\u30a1\u30af\u30bf\u30ea\u30f3\u30b0\u3092\u691c\u8a0e<\/p>\n<\/li>\n<li>\n<p>px\u2192rem\u306e\u5909\u63db\u65e9\u898b\u8868\u3092\u4f5c\u6210\u3057\u3066\u30c1\u30fc\u30e0\u306b\u5171\u6709<\/p>\n<\/li>\n<li>\n<p>\u30d5\u30a9\u30f3\u30c8\u30b5\u30a4\u30ba\u30fb\u4f59\u767d\u306e\u8abf\u6574\u306b\u306frem\u3092\u3001\u898b\u305f\u76ee\u306e\u8abf\u6574\u306b\u306fpx\u3092\u6d3b\u7528\u3059\u308b\u7df4\u7fd2\u3092\u3059\u308b<\/p>\n<\/li>\n<\/ul>\n<hr>\n<p>CSS\u306e\u5358\u4f4d\u306f\u3001\u305f\u3060\u306e\u6570\u5024\u6307\u5b9a\u3067\u306f\u306a\u304f\u3001<strong>\u8a2d\u8a08\u601d\u60f3\u305d\u306e\u3082\u306e<\/strong>\u306b\u76f4\u7d50\u3057\u307e\u3059\u3002rem\u3068px\u306e\u7279\u6027\u3092\u7406\u89e3\u3057\u3001\u30a2\u30af\u30bb\u30b7\u30d6\u30eb\u3067\u62e1\u5f35\u6027\u306e\u9ad8\u3044UI\u8a2d\u8a08\u3092\u5b9f\u73fe\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<h3>\u3010\u5916\u90e8\u30ea\u30f3\u30af\u3011<\/h3>\n<ul>\n<li><a href=\"https:\/\/developer.mozilla.org\/ja\/docs\/Web\/CSS\/length\" target=\"_blank\" rel=\"noopener\">MDN Web Docs: CSS\u306e\u9577\u3055\u306e\u5358\u4f4d\uff08px, rem \u306a\u3069\uff09<\/a><\/li>\n<li><a href=\"https:\/\/developer.mozilla.org\/ja\/docs\/Web\/CSS\/font-size\" target=\"_blank\" rel=\"noopener\">MDN Web Docs: font-size<\/a><\/li>\n<li><a href=\"https:\/\/www.w3.org\/TR\/WCAG21\/\" target=\"_blank\" rel=\"noopener\">W3C: Web Content Accessibility Guidelines (WCAG) 2.1<\/a><\/li>\n<\/ul>\n<h3>\u3010\u5185\u90e8\u30ea\u30f3\u30af\u3011<\/h3>\n<ul>\n<li><a href=\"https:\/\/route-zero.com\/recruit\/route\/1287\/\">\u30b9\u30de\u30db\u5bfe\u5fdc\u3067\u304d\u3066\u308b\uff1fCSS\u30ec\u30b9\u30dd\u30f3\u30b7\u30d6\u306e\u3084\u308a\u65b9\u3092\u30bc\u30ed\u304b\u3089\u4e01\u5be7\u306b\u89e3\u8aac<\/a><\/li>\n<li><a href=\"https:\/\/route-zero.com\/recruit\/route\/1076\/\">\u3010CSS\u306e\u57fa\u672c\u3011\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u7c21\u5358\u306b\u4e2d\u592e\u306b\u914d\u7f6e\u3059\u308b\u65b9\u6cd5\u3092\u5fb9\u5e95\u89e3\u8aac<\/a><\/li>\n<li><a href=\"https:\/\/route-zero.com\/recruit\/route\/1091\/\">\u3010\u4fdd\u5b58\u7248\u3011Web\u5236\u4f5c\u3067\u4f7f\u3048\u308bCSS\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f310\u9078\uff5c\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\uff06\u4f7f\u3044\u65b9\u89e3\u8aac<\/a><\/li>\n<li><a href=\"https:\/\/route-zero.com\/recruit\/route\/1252\/\">SCSS\u3063\u3066\u4f55\uff1fCSS\u3068\u306e\u9055\u3044\u3068\u5c0e\u5165\u30e1\u30ea\u30c3\u30c8\u3092\u5b9f\u4f8b\u4ed8\u304d\u3067\u89e3\u8aac<\/a><\/li>\n<\/ul>\n<\/div>\n","protected":false},"featured_media":1308,"template":"","_links":{"self":[{"href":"https:\/\/route-zero.com\/recruit\/wp-json\/wp\/v2\/route\/1307"}],"collection":[{"href":"https:\/\/route-zero.com\/recruit\/wp-json\/wp\/v2\/route"}],"about":[{"href":"https:\/\/route-zero.com\/recruit\/wp-json\/wp\/v2\/types\/route"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/route-zero.com\/recruit\/wp-json\/wp\/v2\/media\/1308"}],"wp:attachment":[{"href":"https:\/\/route-zero.com\/recruit\/wp-json\/wp\/v2\/media?parent=1307"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}