{"id":6150,"date":"2025-09-19T16:32:14","date_gmt":"2025-09-19T16:32:14","guid":{"rendered":"https:\/\/pokecon.jp\/job\/?p=6150"},"modified":"2025-09-19T16:32:14","modified_gmt":"2025-09-19T16:32:14","slug":"%e4%be%bf%e5%88%a9%ef%bc%9f%e3%80%80%e3%81%9d%e3%82%8c%e3%81%a8%e3%82%82%e6%b7%b7%e4%b9%b1%ef%bc%9f%e3%80%80css%e3%81%aeif%e9%96%a2%e6%95%b0-ics-media","status":"publish","type":"post","link":"https:\/\/pokecon.jp\/job\/6150\/","title":{"rendered":"\u4fbf\u5229\uff1f\u3000\u305d\u308c\u3068\u3082\u6df7\u4e71\uff1f\u3000CSS\u306eif()\u95a2\u6570 – ICS MEDIA"},"content":{"rendered":"\n<\/p>\n
\n

CSS\u306e\u4ed5\u69d8\u306e\u7b56\u5b9a\u3092\u884c\u3063\u3066\u3044\u308bCSS Working Group\uff08CSSWG\uff09\u3067\u306f\u3001CSS\u306bif()<\/code>\u95a2\u6570\u3092\u8ffd\u52a0\u3059\u308b\u63d0\u6848\u304c\u51fa\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u306eif()<\/code>\u95a2\u6570\u306f\u6587\u5b57\u901a\u308aCSS\u306b\u304a\u3051\u308b\u5206\u5c90\u3092\u884c\u3046\u95a2\u6570<\/strong>\u3067\u3059\u3002\u4ed5\u69d8\u7b56\u5b9a\u4e2d\u3067\u306f\u3042\u308a\u307e\u3059\u304c\u3001\u3059\u3067\u306bChrome\u30fbEdge 137\uff082025\u5e745\u6708\u30ea\u30ea\u30fc\u30b9\uff09\u3088\u308a\u5229\u7528\u53ef\u80fd\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u65b0\u3057\u3044if()<\/code>\u95a2\u6570\u306e\u7279\u6027\u3001\u3082\u305f\u3089\u3059\u30e1\u30ea\u30c3\u30c8\u3001\u305d\u3057\u3066\u30c7\u30e1\u30ea\u30c3\u30c8\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n

\"CSS<\/p>\n

\u25bcChrome\u30fbEdge 137\u4ee5\u964d\u306e\u30d6\u30e9\u30a6\u30b6\u3067\u3054\u78ba\u8a8d\u304f\u3060\u3055\u3044<\/p>\n

if()\u95a2\u6570\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9<\/h3>\n

CSS\u306eif()<\/code>\u95a2\u6570\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002if()<\/code>\u95a2\u6570\u306fCSS\u306e\u5024\u3092\u6761\u4ef6\u5206\u5c90\u3059\u308b\u306e\u3067\u5024\u90e8\u5206\u306b\u8a18\u8ff0\u3057\u307e\u3059\u3002<\/p>\n

\n.hoge<\/span> {\n  background-color<\/span>: if<\/span>(\n    style<\/span>(--color: primary): red;\n    else: blue;\n  );\n}\n<\/code><\/pre>\n
style(--color: primary)<\/code>\u306e\u90e8\u5206\u304c\u6761\u4ef6\u306b\u306a\u308a\u307e\u3059\u3002\u3053\u308c\u306f\u300c--color<\/code>\u3068\u3044\u3046CSS\u5909\u6570\u306e\u5024\u304cprimary<\/code>\u306e\u3068\u304d\u300d\u3068\u3044\u3046\u6761\u4ef6\u3092\u8868\u3057\u307e\u3059\u3002\u3053\u306e\u66f8\u304d\u65b9\u306f\u30b3\u30f3\u30c6\u30ca\u30fc\u30b9\u30bf\u30a4\u30eb\u30af\u30a8\u30ea\u30fc\u3068\u540c\u3058\u3067\u3059\u3002\u30b3\u30f3\u30c6\u30ca\u30fc\u30b9\u30bf\u30a4\u30eb\u30af\u30a8\u30ea\u30fc\u306b\u3064\u3044\u3066\u306f\u8a18\u4e8b\u300eCSS\u306e\u30b3\u30f3\u30c6\u30ca\u30fc\u30b9\u30bf\u30a4\u30eb\u30af\u30a8\u30ea\u30fcstyle()\u306e\u4f7f\u3044\u65b9<\/a>\u300f\u3067\u89e3\u8aac\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u6761\u4ef6\u306b\u306f\u30b9\u30bf\u30a4\u30eb\u306e\u4ed6\u306b\u3082@media<\/code>\u3067\u4f7f\u3046\u30e1\u30c7\u30a3\u30a2\u7279\u6027\u3084@supports<\/code>\u3067\u4f7f\u3046\u6a5f\u80fd\u306e\u6709\u7121\u306a\u3069\u3082\u6761\u4ef6\u306b\u6307\u5b9a\u3067\u304d\u307e\u3059\u3002\u8907\u6570\u6761\u4ef6\u3082\u66f8\u3051\u308b\u306e\u3067\u4e0a\u304b\u3089\u8a55\u4fa1\u3059\u308belse-if\u7684\u306a\u4f7f\u3044\u65b9\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n
\n.fuga<\/span> {\n  background-color<\/span>: if<\/span>(\n    media<\/span>(width 768px): red;\n    else: blue;\n  );\n}\n\n\n.piyo<\/span> {\n  background-color<\/span>: if<\/span>(\n    supports<\/span>(display: grid): red;\n    else: blue;\n  );\n}\n<\/code><\/pre>\n
\"\u5206\u5c90\u6761\u4ef6\u306e\u7a2e\u985e\"<\/p>\n
\u203bif()<\/code>\u95a2\u6570\u3092\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u30d6\u30e9\u30a6\u30b6\u306a\u3089\u5f53\u7136display: grid<\/code>\u304c\u4f7f\u3048\u308b\u306e\u3067\u3001\u8d64\u306b\u3057\u304b\u306a\u308a\u3048\u307e\u305b\u3093\u3002\u3042\u304f\u307e\u3067\u4f8b\u3068\u3057\u3066\u7d39\u4ecb\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u3088\u308a\u5177\u4f53\u7684\u306a\u4f7f\u7528\u4f8b\u3068\u3057\u3066\u306f\u30c7\u30b6\u30a4\u30f3\u30b7\u30b9\u30c6\u30e0\u306a\u3069\u306b\u304a\u3051\u308b\u30dc\u30bf\u30f3\u306e\u30d0\u30ea\u30a2\u30f3\u30c8\u7ba1\u7406\u306b\u5229\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n
button<\/span> class<\/span>=\"buttonVariant\"<\/span> style<\/span>=\"--variant: primary;\"<\/span>>Buttonbutton<\/span>><\/span>\n<\/code><\/pre>\n
\n.buttonVariant<\/span> {\n  background-color<\/span>: if<\/span>(\n    style<\/span>(--variant: primary): var<\/span>(--color-primary);\n    style(--variant<\/span>: secondary): var<\/span>(--color-secondary);\n    style(--variant<\/span>: tertiary): transparent;\n  );\n  border-color<\/span>: if<\/span>(\n    style<\/span>(--variant: primary): var<\/span>(--color-primary);\n    style(--variant<\/span>: secondary): var<\/span>(--color-secondary);\n    style(--variant<\/span>: tertiary): var<\/span>(--color-tertiary);\n  );\n  color<\/span>: if<\/span>(\n    style<\/span>(--variant: tertiary): var<\/span>(--color-text);\n    else: var<\/span>(--color-text-inverted)\n  );\n}\n<\/code><\/pre>\n
\"\u30d0\u30ea\u30a2\u30f3\u30c8\u3092\u51fa\u3057\u5206\u3051\u305f\u30dc\u30bf\u30f3\"<\/p>\n
\u307e\u305fif()<\/code>\u95a2\u6570\u306fCSS\u5909\u6570\u306e\u5024\u3068\u3057\u3066\u3082\u5229\u7528\u3067\u304d\u308b\u306e\u3067\u3001\u6b21\u306e\u3088\u3046\u306b\u3082\u66f8\u3051\u307e\u3059\u3002<\/p>\n
\n.buttonVariant<\/span> {\n  --background-color<\/span>: if<\/span>(\n    style<\/span>(--variant: primary): var<\/span>(--color-primary);\n    style(--variant<\/span>: secondary): var<\/span>(--color-secondary);\n    style(--variant<\/span>: tertiary): transparent;\n  );\n  --border-color<\/span>: if<\/span>(\n    style<\/span>(--variant: primary): var<\/span>(--color-primary);\n    style(--variant<\/span>: secondary): var<\/span>(--color-secondary);\n    style(--variant<\/span>: tertiary): var<\/span>(--color-tertiary);\n  );\n  --text-color<\/span>: if<\/span>(\n    style<\/span>(--variant: tertiary): var<\/span>(--color-text);\n    else: var<\/span>(--color-text-inverted)\n  );\n\n  background-color<\/span>: var<\/span>(--background-color);\n  border-color<\/span>: var<\/span>(--border-color);\n  color<\/span>: var<\/span>(--text-color);\n}\n<\/code><\/pre>\n
\u6761\u4ef6\u3068\u30b9\u30bf\u30a4\u30ea\u30f3\u30b0\u3092\u5206\u96e2\u3057\u3066\u8a18\u8ff0\u3067\u304d\u308b\u306e\u3082\u7279\u5fb4\u3067\u3059\u3002<\/p>\n
\u30dc\u30bf\u30f3\u30d0\u30ea\u30a2\u30f3\u30c8\u306e\u4f8b\u3067\u306f\u76f4\u63a5\u30a4\u30f3\u30e9\u30a4\u30f3\u30b9\u30bf\u30a4\u30eb\u306b\u3066CSS\u5909\u6570\u3092\u6e21\u3057\u3066\u3044\u307e\u3057\u305f\u304c\u3001\u30af\u30e9\u30b9\u540d\u7d4c\u7531\u3067\u6e21\u3059\u66f8\u304d\u65b9\u3082\u3067\u304d\u307e\u3059\u3002\u30bf\u30a4\u30dd\u30b0\u30e9\u30d5\u30a3\u306e\u4f8b\u3067\u306f\u6b21\u306e\u3088\u3046\u306b\u66f8\u3051\u307e\u3059\u3002<\/p>\n
p<\/span> class<\/span>=\"typography fontSize-display fontWeight-bold\"<\/span>>\u30e1\u30ed\u30b9\u306f\u6fc0\u6012\u3057\u305fp<\/span>><\/span>\n<\/code><\/pre>\n
.typography<\/span> {\n  font-size<\/span>: if<\/span>(\n    style<\/span>(--font-size: display): 48px<\/span>;\n    style(--font-size<\/span>: heading): 32px<\/span>;\n    style(--font-size<\/span>: body): 16px<\/span>;\n    style(--font-size<\/span>: small): 14px<\/span>;\n    else: 16px<\/span>;\n  );\n  font-weight<\/span>: if<\/span>(\n    style<\/span>(--font-weight: bold): bold;\n    style(--font-weight<\/span>: regular): normal;\n    else: normal;\n  );\n}\n\n.fontSize-display<\/span> {\n  --font-size<\/span>: display;\n}\n\n.fontSize-heading<\/span> {\n  --font-size<\/span>: heading;\n}\n\n.fontSize-body<\/span> {\n  --font-size<\/span>: body;\n}\n\n.fontSize-small<\/span> {\n  --font-size<\/span>: small;\n}\n\n.fontWeight-bold<\/span> {\n  --font-weight<\/span>: bold;\n}\n\n.fontWeight-regular<\/span> {\n  --font-weight<\/span>: regular;\n}\n<\/code><\/pre>\n
\"\u30d5\u30a9\u30f3\u30c8\u30b5\u30a4\u30ba\u3001\u30a6\u30a7\u30a4\u30c8\u3001\u30ab\u30e9\u30fc\u306b\u8a2d\u5b9a\u306b\u3088\u3063\u3066\u5909\u5316\u3059\u308b\u30c6\u30ad\u30b9\u30c8\"<\/p>\n
\u30c7\u30b6\u30a4\u30f3\u30b7\u30b9\u30c6\u30e0\u306e\u30c7\u30b6\u30a4\u30f3\u30c8\u30fc\u30af\u30f3\u3068\u3057\u3066\u7ba1\u7406\u3055\u308c\u3066\u3044\u308b\u3088\u3046\u306a\u30b9\u30bf\u30a4\u30eb\u306b\u3082\u6d3b\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n
\u5f93\u6765\u6280\u8853\u3068\u306e\u9055\u3044<\/h3>\n
CSS\u306b\u8a73\u3057\u3044\u65b9\u306a\u3089\u3053\u3053\u307e\u3067\u7d39\u4ecb\u3057\u305f\u3082\u306e\u306f\u65e2\u5b58\u306e\u6a5f\u80fd\u3067\u3082\u5b9f\u73fe\u53ef\u80fd\u3067\u3042\u308b\u3053\u3068\u306b\u304a\u6c17\u3065\u304d\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u305f\u3068\u3048\u3070\u3001\u30dc\u30bf\u30f3\u306e\u30d0\u30ea\u30a2\u30f3\u30c8\u306fCSS\u5909\u6570\u306e\u304b\u308f\u308a\u306b\u30af\u30e9\u30b9\u540d\u3067\u6761\u4ef6\u5206\u5c90\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n
.buttonVariant<\/span> {\n  &.primary<\/span> {\n    background-color<\/span>: var<\/span>(--color-primary);\n    border-color<\/span>: var<\/span>(--color-primary);\n    color<\/span>: var<\/span>(--color-text-inverted);\n  }\n  &.secondary<\/span> {\n    background-color<\/span>: var<\/span>(--color-secondary);\n    border-color<\/span>: var<\/span>(--color-secondary);\n    color<\/span>: var<\/span>(--color-text-inverted);\n  }\n  &.tertiary<\/span> {\n    background-color<\/span>: transparent;\n    border-color<\/span>: var<\/span>(--color-tertiary);\n    color<\/span>: var<\/span>(--color-text);\n  }\n}\n<\/code><\/pre>\n
\u3042\u308b\u3044\u306f\u30b3\u30f3\u30c6\u30ca\u30fc\u30b9\u30bf\u30a4\u30eb\u30af\u30a8\u30ea\u30fc\u3092\u7528\u3044\u3066\u3082\u540c\u3058\u3088\u3046\u306a\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n
@container<\/span> style(--variant<\/span>: primary) {\n  .buttonVariant<\/span> {\n    background-color<\/span>: var<\/span>(--color-primary);\n    border-color<\/span>: var<\/span>(--color-primary);\n    color<\/span>: var<\/span>(--color-text-inverted)\n  }\n}\n\n@container<\/span> style(--variant<\/span>: secondary) {\n  .buttonVariant<\/span> {\n    background-color<\/span>: var<\/span>(--color-secondary);\n    border-color<\/span>: var<\/span>(--color-secondary);\n    color<\/span>: var<\/span>(--color-text-inverted);\n  }\n}\n\n@container<\/span> style(--variant<\/span>: tertiary) {\n  .buttonVariant<\/span> {\n    background-color<\/span>: transparent;\n    border-color<\/span>: var<\/span>(--color-tertiary);\n    color<\/span>: var<\/span>(--color-text);\n  }\n}\n<\/code><\/pre>\n
\u305d\u306e\u305f\u3081\u3001if()<\/code>\u95a2\u6570\u3092\u4f7f\u308f\u305a\u65e2\u5b58\u306e\u6280\u8853\u3092\u7528\u3044\u3066\u3082\u30b9\u30bf\u30a4\u30eb\u306e\u51fa\u3057\u5206\u3051\u306f\u53ef\u80fd\u3067\u3059\u3002\u3053\u3053\u3067\u306f\u5f93\u6765\u6280\u8853\u3068if()<\/code>\u95a2\u6570\u306e\u9055\u3044\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n
\u8a73\u7d30\u5ea6\u3092\u3042\u3052\u306a\u3044<\/h4>\n
if()<\/code>\u95a2\u6570\u306b\u3088\u308b\u5024\u306e\u5206\u5c90\u306fCSS\u306e\u8a73\u7d30\u5ea6\u304c\u3042\u304c\u308a\u307e\u305b\u3093\u30021\u3064\u76ee\u306b\u6319\u3052\u305f\u30af\u30e9\u30b9\u540d\u306b\u3088\u308b\u5206\u5c90\u306f\u8a73\u7d30\u5ea6\u306e\u9ad8\u4f4e\u306b\u3088\u308b\u4e0a\u66f8\u304d\u306b\u3088\u3063\u3066\u884c\u308f\u308c\u3066\u3044\u307e\u3059\u3002\u30b9\u30bf\u30a4\u30eb\u304c3\u7a2e\u985e\u306e\u307f\u306e\u30d0\u30ea\u30a8\u30fc\u30b7\u30e7\u30f3\u3067\u3042\u308c\u3070\u305d\u3053\u307e\u3067\u554f\u984c\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u3053\u3053\u306b\u72b6\u614b\u306b\u3088\u308b\u51fa\u3057\u5206\u3051\u3001\u305f\u3068\u3048\u3070\u975e\u6d3b\u6027\u6642\u3001\u30db\u30d0\u30fc\u6642\u306e\u30b9\u30bf\u30a4\u30eb\u306a\u3069\u304c\u52a0\u308f\u308b\u3068\u8a73\u7d30\u5ea6\u306e\u7ba1\u7406\u304c\u96e3\u3057\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n
\u72b6\u614b\u306b\u3088\u308b\u30b9\u30bf\u30a4\u30eb\u306f:disabled<\/code>\u3084:hover<\/code>\u306a\u3069\u306e\u7591\u4f3c\u30af\u30e9\u30b9\u3067\u8868\u73fe\u3067\u304d\u307e\u3059\u304c\u3001\u3053\u308c\u3089\u306f\u30af\u30e9\u30b9\u540d\u3068\u540c\u3058\u8a73\u7d30\u5ea6\u3092\u3082\u3061\u307e\u3059\u3002\u7a2e\u985e\u00d7\u72b6\u614b\u306b\u3088\u3063\u3066\u7d44\u307f\u5408\u308f\u305b\u304c\u5897\u5927\u3059\u308b\u5834\u5408\u306f\u8a73\u7d30\u5ea6\u3092\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u3059\u308b\u9069\u5207\u306aCSS\u3092\u66f8\u304f\u5fc5\u8981<\/strong>\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
if()<\/code>\u95a2\u6570\u3092\u7528\u3044\u308b\u3068\u8a73\u7d30\u5ea6\u30d0\u30c8\u30eb\u3067\u306f\u306a\u304f\u3001\u4ed5\u69d8\u306e\u8ad6\u7406\u306b\u6cbf\u3063\u3066<\/strong>\u66f8\u3051\u307e\u3059\u3002\u6b21\u306e\u3088\u3046\u306a\u4ed5\u69d8\u306e\u30dc\u30bf\u30f3\u304c\u3042\u3063\u305f\u3068\u3057\u307e\u3059\u3002<\/p>\n
    \n
  1. \u30d7\u30e9\u30a4\u30de\u30ea\u30fc\u3001\u30bb\u30ab\u30f3\u30c0\u30ea\u30fc\u3001\u30bf\u30fc\u30b7\u30e3\u30ea\u30fc\u306e3\u7a2e\u985e\u306e\u30d0\u30ea\u30a8\u30fc\u30b7\u30e7\u30f3\u304c\u3042\u308b<\/li>\n
  2. 3\u7a2e\u985e\u305d\u308c\u305e\u308c\u975e\u6d3b\u6027\u6642\u306e\u8272\u3001\u30db\u30d0\u30fc\u306e\u8272\u304c\u3042\u308b<\/li>\n
  3. \u975e\u6d3b\u6027\u6642\u306f\u30db\u30d0\u30fc\u306b\u3088\u308b\u8272\u306e\u5909\u5316\u304c\u306a\u304f\u3001\u305d\u308c\u4ee5\u5916\u306f\u30db\u30d0\u30fc\u6642\u306e\u8272\u304c\u9069\u7528\u3055\u308c\u308b<\/li>\n<\/ol>\n
    \"\u8907\u96d1\u306a\u6761\u4ef6\u306b\u3088\u308b\u30b9\u30bf\u30a4\u30eb\u3092\u3082\u3064\u30dc\u30bf\u30f3\"<\/p>\n
    \u25bcbackground-color\u306e\u307f\u629c\u7c8b<\/p>\n
    .buttonVariant<\/span> {\n  &:disabled<\/span> {\n    --isDisabled<\/span>: true;\n  }\n  &:hover<\/span> {\n    --isHover<\/span>: true;\n  }\n}\n\n.buttonVariant<\/span> {\n background-color<\/span>: if<\/span>(\n    style<\/span>(--variant: primary): if<\/span>(\n      style<\/span>(--isDisabled: true): var<\/span>(--color-primary-disabled);\n      style(--isHover<\/span>: true): var<\/span>(--color-primary-hover);\n      else: var<\/span>(--color-primary);\n    );\n    style(--variant<\/span>: secondary): if<\/span>(\n      style<\/span>(--isDisabled: true): var<\/span>(--color-secondary-disabled);\n      style(--isHover<\/span>: true): var<\/span>(--color-secondary-hover);\n      else: var<\/span>(--color-secondary);\n    );\n    style(--variant<\/span>: tertiary): if<\/span>(\n      style<\/span>(--isDisabled: true): transparent;\n      style(--isHover<\/span>: true): var<\/span>(--color-tertiary-hover);\n      else: transparent;\n    );\n  );\n}\n<\/code><\/pre>\n
    \u305f\u3060\u3057\u3001\u3053\u308c\u306f\u3053\u308c\u3067if()<\/code>\u304c\u30cd\u30b9\u30c8\u3055\u308c\u308b\u306e\u3067\u53ef\u8aad\u6027\u304c\u9ad8\u3044\u3068\u3082\u8a00\u3048\u307e\u305b\u3093\u3002\u53ef\u8aad\u6027\u304c\u9ad8\u3044\u304c\u8907\u96d1\u306a\u8a73\u7d30\u5ea6\u306b\u3088\u308b\u4e0a\u66f8\u304d\u3068\u3059\u308b\u304b\u3001\u53ef\u8aad\u6027\u304c\u4f4e\u3044\u304c\u4ed5\u69d8\u306b\u6cbf\u3063\u305f\u8a18\u8ff0\u304c\u3067\u304d\u308bif()<\/code>\u95a2\u6570\u3092\u4f7f\u3046\u304b\u306f\u3001\u958b\u767a\u74b0\u5883\u3084\u30e1\u30f3\u30d0\u30fc\u306e\u597d\u307f\u306a\u3069\u306b\u3088\u3063\u3066\u6c7a\u3081\u3066\u3044\u304f\u3068\u3088\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n
    \u30e9\u30c3\u30d1\u30fc\u8981\u7d20\u304c\u5fc5\u8981\u306a\u3044<\/h4>\n
    if()<\/code>\u95a2\u6570\u306f\u30b3\u30f3\u30c6\u30ca\u30fc\u30b9\u30bf\u30a4\u30eb\u30af\u30a8\u30ea\u30fc\u3068\u4f3c\u305f\u6027\u8cea\u3092\u3082\u3063\u3066\u3044\u307e\u3059\u304c\u3001\u30b3\u30f3\u30c6\u30ca\u30fc\u30b9\u30bf\u30a4\u30eb\u30af\u30a8\u30ea\u30fc\u3092\u9069\u7528\u3059\u308b\u306b\u306f\u305d\u306e\u89aa\u8981\u7d20\u304c\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
    @container<\/span> style(--variant<\/span>: primary) {\n  .buttonVariant<\/span> {\n    \n  }\n}\n<\/code><\/pre>\n
    \u3053\u306e\u3088\u3046\u306b\u3057\u305f\u3044\u5834\u5408\u306b\u306fHTML\u306f.buttonVariant<\/code>\u306e\u89aa\u8981\u7d20\u306b\u5206\u5c90\u306e\u305f\u3081\u306e\u30b9\u30bf\u30a4\u30eb\u3092\u66f8\u304f\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
    div<\/span> style<\/span>=\"--variant: primary;\"<\/span>>\n  button<\/span> class<\/span>=\"buttonVariant\"<\/span>>Buttonbutton<\/span>><\/span>\ndiv<\/span>><\/span>\n<\/code><\/pre>\n
    \u3053\u306e\u3088\u3046\u306aHTML\u4e0a\u306e\u5236\u7d04\u306f\u30ec\u30a4\u30a2\u30a6\u30c8\u306e\u30b9\u30bf\u30a4\u30ea\u30f3\u30b0\u3067\u554f\u984c\u306b\u306a\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002Flexbox\u3084Grid\u306a\u3069\u306f\u76f4\u4e0b\u306e\u8981\u7d20\u306b\u5bfe\u3057\u3066\u4f5c\u7528\u3059\u308b\u306e\u3067\u3001\u3053\u306e\u3088\u3046\u306a\u30e9\u30c3\u30d1\u30fc\u8981\u7d20\u306f\u30b9\u30bf\u30a4\u30ea\u30f3\u30b0\u306e\u53d6\u308a\u56de\u3057\u3092\u60aa\u304f\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u5927\u304d\u3081\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306a\u3069\u306f\u30e9\u30c3\u30d1\u30fc\u8981\u7d20\u3092\u306f\u3058\u3081\u304b\u3089\u3082\u3064\u5834\u5408\u3082\u3042\u308b\u306e\u3067\u3001\u305d\u306e\u3088\u3046\u306a\u5834\u5408\u3067\u306f\u30e9\u30c3\u30d1\u30fc\u8981\u7d20\u3092\u3082\u305f\u306a\u3044<\/strong>\u3068\u3044\u3046if()<\/code>\u95a2\u6570\u306e\u30e1\u30ea\u30c3\u30c8\u306f\u8584\u307e\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n
    \u5fdc\u7528\u4f8b<\/h3>\n
    if()<\/code>\u95a2\u6570\u306e\u6027\u8cea\u3084\u5f93\u6765\u6280\u8853\u3068\u306e\u9055\u3044\u3092\u8e0f\u307e\u3048\u3066\u3001if()<\/code>\u95a2\u6570\u3092\u6d3b\u7528\u3059\u308b\u5fdc\u7528\u4f8b\u3092\u3044\u304f\u3064\u304b\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n
    \u30b0\u30ed\u30fc\u30d0\u30eb\u306e\u72b6\u614b\u7ba1\u7406\u3078\u306e\u5229\u7528<\/h4>\n
    \u753b\u9762\u5e45\u306e\u30b5\u30a4\u30ba\u3092CSS\u5909\u6570\u3068\u3057\u3066\u7ba1\u7406\u3057\u3001\u753b\u9762\u5e45\u306b\u5fdc\u3058\u305f\u30b9\u30bf\u30a4\u30eb\u306e\u5909\u66f4\u3092\u30e1\u30c7\u30a3\u30a2\u30af\u30a8\u30ea\u30fc\u3092\u66f8\u304f\u3053\u3068\u306a\u304f\u3001\u76f4\u63a5\u30d7\u30ed\u30d1\u30c6\u30a3\u306b\u3066\u8a18\u8ff0\u3067\u304d\u307e\u3059\u3002<\/p>\n
    @property<\/span> --window-size {\n  syntax: \"mobile | tablet | desktop\"<\/span>;\n  inherits: true;\n  initial-value: desktop;\n}\n\n:root<\/span> {\n  --window-size<\/span>: if<\/span>(\n    media<\/span>(width >= 1024px<\/span>): desktop;\n    media(768px<\/span> width 1024px): tablet;\n    else: mobile;\n  );\n}\n\n.sizeJudgeBox<\/span> {\n  \n  background-color<\/span>: if<\/span>(\n    style<\/span>(--window-size: mobile): var<\/span>(--color-tertiary);\n    style(--window-size<\/span>: tablet): var<\/span>(--color-secondary);\n    style(--window-size<\/span>: desktop): var<\/span>(--color-primary);\n  );\n}\n\n\n.desktopOnly<\/span> {\n  display<\/span>: if<\/span>(\n    style<\/span>(--window-size: desktop): revert;\n    else: none;\n  );\n}\n\n\n.tabletOnly<\/span> {\n  display<\/span>: if<\/span>(\n    style<\/span>(--window-size: tablet): revert;\n    else: none;\n  );\n}\n\n\n.mobileOnly<\/span> {\n  display<\/span>: if<\/span>(\n    style<\/span>(--window-size: mobile): revert;\n    else: none;\n  );\n}\n<\/code><\/pre>\n
    \"\u753b\u9762\u5e45\u3092\u5909\u3048\u3066\u3044\u308b\u69d8\u5b50\"<\/p>\n
    \u30b0\u30ed\u30fc\u30d0\u30eb\u306a\u72b6\u614b\u3092CSS\u5909\u6570\u306b\u3082\u305f\u305b\u3001\u305d\u308c\u306b\u5fdc\u3058\u305f\u30b9\u30bf\u30a4\u30eb\u306e\u5909\u66f4\u3092if()<\/code>\u95a2\u6570\u3067\u884c\u3046\u3053\u3068\u3067\u3001\u30b9\u30bf\u30a4\u30eb\u306b\u304a\u3044\u3066\u30e1\u30c7\u30a3\u30a2\u30af\u30a8\u30ea\u30fc\u3092\u66f8\u304b\u306a\u304f\u3066\u3088\u304f\u306a\u308a\u307e\u3059\u3002\u500b\u5225\u306e\u30e1\u30c7\u30a3\u30a2\u30af\u30a8\u30ea\u30fc\u3092\u66f8\u304b\u306a\u3044\u30e1\u30ea\u30c3\u30c8\u306f\u3001\u30d6\u30ec\u30fc\u30af\u30dd\u30a4\u30f3\u30c8\u3092--window-size<\/code>\u5909\u6570\u306e\u7b97\u51fa\u3057\u3066\u3044\u308b\u90e8\u52061\u7b87\u6240\u3067\u7ba1\u7406\u3067\u304d\u308b\u306e\u3067\u3001\u30d6\u30ec\u30fc\u30af\u30dd\u30a4\u30f3\u30c8\u306e\u5909\u66f4\u304c\u5bb9\u6613\u306b\u306a\u308b\u3053\u3068\u3067\u3059\u3002<\/p>\n
    \u306a\u304a\u3001CSS\u5909\u6570\u306e\u521d\u671f\u5024\u3092\u3044\u304d\u306a\u308aif()<\/code>\u95a2\u6570\u3067\u8a2d\u5b9a\u3059\u308b\u3068\u3046\u307e\u304fCSS\u5909\u6570\u304c\u8a2d\u5b9a\u3055\u308c\u306a\u3044\u3088\u3046\u306a\u306e\u3067@property<\/code>\u3067CSS\u5909\u6570\u3092\u8a2d\u5b9a\u3059\u308b\u3068\u3088\u3044\u3067\u3059\u3002@property<\/code>\u306b\u3064\u3044\u3066\u306f\u8a18\u4e8b\u300e\u610f\u5916\uff1f @property\u304cCSS\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u3092\u6fc0\u5909\u3055\u305b\u308b\u7406\u7531<\/a>\u300f\u3067\u89e3\u8aac\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
    \u30ab\u30e9\u30fc\u30b9\u30ad\u30fc\u30e0\u306e\u3088\u3046\u306a\u5168\u4f53\u306e\u30ab\u30e9\u30fc\u8a2d\u5b9a\u306b\u3082\u6d3b\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n
    \n:root<\/span> {\n  --color-1<\/span>: if<\/span>(\n    style<\/span>(--color-scheme: type1): #28536B<\/span>;\n    style(--color-scheme<\/span>: type2): #5BC0EB<\/span>;\n    style(--color-scheme<\/span>: type3): #36213E<\/span>;\n  );\n  --color-2<\/span>: if<\/span>(\n    style<\/span>(--color-scheme: type1): #C2948A<\/span>;\n    style(--color-scheme<\/span>: type2): #FDE74C<\/span>;\n    style(--color-scheme<\/span>: type3): #554971<\/span>;\n  );\n  --color-3<\/span>: if<\/span>(\n    style<\/span>(--color-scheme: type1): #7EA8BE<\/span>;\n    style(--color-scheme<\/span>: type2): #9BC53D<\/span>;\n    style(--color-scheme<\/span>: type3): #63768D<\/span>;\n  );\n}\n<\/code><\/pre>\n
    \"\u30ab\u30e9\u30fc\u30b9\u30ad\u30fc\u30e0\u306b\u3088\u3063\u3066\u8272\u3092\u5909\u3048\u308b\"<\/p>\n
    CSS\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u3078\u306e\u5fdc\u7528<\/h4>\n
    if()<\/code>\u95a2\u6570\u306b\u3088\u308b\u6761\u4ef6\u5206\u5c90\u306fCSS\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u306b\u304a\u3044\u3066\u3082\u6d3b\u7528\u3067\u304d\u307e\u3059\u3002\u9023\u7d9a\u7684\u306b\u5024\u306e\u5909\u5316\u3059\u308bCSS\u5909\u6570\u3092\u7279\u5b9a\u306e\u5024\u4ee5\u4e0b\u306b\u306a\u3063\u305f\u3089\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u3092\u5909\u3048\u308b\u3001\u3068\u3044\u3063\u305f\u3053\u3068\u304cCSS\u306e\u307f\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002\u305f\u3068\u3048\u3070\u30b2\u30fc\u30e0\u3067\u898b\u308b\u3088\u3046\u306a\u6b8b\u308aHP\u306b\u3088\u3063\u3066\u8272\u306e\u5909\u308f\u308bHP\u30d0\u30fc\u3082CSS\u306e\u307f\u3067\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<\/p>\n
    \"\u8272\u304c\u5909\u308f\u308bHP\u30d0\u30fc\"<\/p>\n
    @property<\/span> --is-under-50<\/span> {\n  syntax: \"\"<\/integer><\/span>;\n  inherits: false;\n  initial-value: 0<\/span>;\n}\n\n@property<\/span> --is-under-20<\/span> {\n  syntax: \"\"<\/integer><\/span>;\n  inherits: false;\n  initial-value: 0<\/span>;\n}\n\n@property<\/span> --hp-bar-width {\n  syntax: \"\"<\/percentage><\/span>;\n  inherits: false;\n  initial-value: 100%<\/span>;\n}\n\n.hpBarInner<\/span> {\n  --is-under-50<\/span>: sign<\/span>(var<\/span>(--hp-bar-width) - 50%<\/span>);\n  --is-under-20<\/span>: sign<\/span>(var<\/span>(--hp-bar-width) - 20%<\/span>);\n  width<\/span>: var<\/span>(--hp-bar-width);\n  background-color<\/span>: if<\/span>(\n    style<\/span>(--is-under-20<\/span>: -1<\/span>): #e60c30<\/span>;\n    style(--is-under-50<\/span>: -1<\/span>): #e6df0c<\/span>;\n    else: #0ec70b<\/span>;\n  );\n  animation<\/span>: hpBar 3s<\/span> linear infinite backwards;\n}\n\n\n@keyframes<\/span> hpBar {\n  0%<\/span> {\n    --hp-bar-width<\/span>: 100%<\/span>;\n  }\n  20%<\/span> {\n    --hp-bar-width<\/span>: 100%<\/span>;\n  }\n  70%<\/span> {\n    --hp-bar-width<\/span>: 0%<\/span>;\n  }\n  100%<\/span> {\n    --hp-bar-width<\/span>: 0%<\/span>;\n  }\n}\n<\/code><\/pre>\n
    \u5c11\u3057\u8907\u96d1\u306aCSS\u3067\u3059\u304c\u3001\u304a\u304a\u307e\u304b\u306b\u306f--hp-bar-width<\/code>\u5909\u6570\u306e\u5024\u3092\u52d5\u304b\u3057\u3066HP\u30d0\u30fc\u306e\u6a2a\u5e45\u3068\u80cc\u666f\u8272\u3092\u5909\u3048\u3066\u3044\u307e\u3059\u3002\u3053\u306e--hp-bar-width<\/code>\u5909\u6570\u306e\u5024\u304c50%\u4ee5\u4e0a\u306f\u7dd1\u300150%\u672a\u6e80\u306b\u306a\u3063\u305f\u3089\u9ec4\u8272\u300120%\u672a\u6e80\u306b\u306a\u3063\u305f\u3089\u8d64\u304f\u3001\u3053\u306e\u6761\u4ef6\u5206\u5c90\u3092if()<\/code>\u95a2\u6570\u3067\u884c\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n
    if()<\/code>\u95a2\u6570\u306f\u5024\u306e\u4e00\u81f4\u3057\u304b\u5224\u5b9a\u3067\u304d\u307e\u305b\u3093\u304c\u3001CSS\u306e\u95a2\u6570\u3067\u3042\u308bsign()<\/code>\u95a2\u6570\u3092\u4f7f\u3046\u3053\u3068\u3067\u7591\u4f3c\u7684\u306b\u672a\u6e80\u306e\u5224\u5b9a\u3092\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002sign()<\/code>\u95a2\u6570\u306f\u5024\u304c0\u3088\u308a\u5927\u304d\u3044\u5834\u5408\u306f1<\/code>\u30010\u306e\u5834\u5408\u306f0<\/code>\u30010\u3088\u308a\u5c0f\u3055\u3044\u5834\u5408\u306f-1<\/code>\u3092\u8fd4\u3059\u95a2\u6570\u3067\u3059\u3002<\/p>\n
    \u3053\u306esign()<\/code>\u95a2\u6570\u3092\u4f7f\u3044--is-under-50<\/code>\u5909\u6570\u3068--is-under-20<\/code>\u5909\u6570\u3068\u3044\u30462\u5909\u6570\u3092\u7d4c\u7531\u3059\u308b\u3053\u3068\u3067\u3001--hp-bar-width<\/code>\u5909\u6570\u306e\u5024\u304c50%\u672a\u6e80\u306e\u5834\u5408\u3001\u304a\u3088\u307320%\u672a\u6e80\u306e\u5834\u5408\u306b-1\u3092\u8fd4\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u5909\u6570\u3092if()<\/code>\u95a2\u6570\u3067\u5224\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u6761\u4ef6\u5206\u5c90\u3092\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n
    \u3042\u3068\u306f--hp-bar-width<\/code>\u5909\u6570\u3092\u5909\u52d5\u3055\u305b\u308c\u3070\u3001\u305d\u306e\u5024\u306b\u5fdc\u3058\u305f\u8272\u3068\u5e45\u306b\u306a\u308a\u307e\u3059\u3002\u4eca\u56de\u306fCSS\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u3092\u7528\u3044\u3066\u9023\u7d9a\u7684\u306b\u52d5\u304b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
    \u307b\u304b\u306b\u3082JavaScript\u3092\u4f7f\u3063\u305f\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u3068\u306e\u9023\u643a\u3082\u53ef\u80fd\u3067\u3059\u3002<\/p>\n
    \"\u6e29\u5ea6\u306b\u3088\u3063\u3066\u9854\u6587\u5b57\u304c\u5909\u308f\u308b\u30b9\u30e9\u30a4\u30c0\u30fc\"<\/p>\n
    \u3053\u3061\u3089\u306e\u4f8b\u3082\u4ed5\u7d44\u307f\u306fHP\u30d0\u30fc\u3068\u540c\u3058\u3067\u3059\u3002\u30b9\u30e9\u30a4\u30c0\u30fc\u306e\u5024\u3092JavaScript\u3067\u53d6\u5f97\u3057\u3001CSS\u306b\u53cd\u6620\u3057\u3066\u3044\u307e\u3059\u3002\u5f93\u6765\u3067\u3042\u308c\u3070\u8868\u793a\u306e\u51fa\u3057\u5206\u3051\u306e\u305f\u3081\u306e\u51e6\u7406\u3092JavaScript\u3067\u884c\u3046\u5fc5\u8981\u304c\u3042\u308a\u307e\u3057\u305f\u3002if()<\/code>\u95a2\u6570\u3092\u4f7f\u3046\u3053\u3068\u3067JavaScript\u306f\u7d14\u7c8b\u306b\u5024\u306e\u901a\u77e5\u3060\u3051\u3092\u884c\u3048\u3070\u3088\u304f\u3001\u30b9\u30bf\u30a4\u30ea\u30f3\u30b0\u306b\u95a2\u3059\u308b\u8cac\u4efb\u3092CSS\u306b\u5206\u96e2<\/strong>\u3067\u304d\u307e\u3059\u3002<\/p>\n
    \u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u9593\u306e\u3084\u308a\u3068\u308a<\/h4>\n
    \u524d\u6bb5\u843d\u306e\u30b0\u30ed\u30fc\u30d0\u30eb\u306e\u72b6\u614b\u7ba1\u7406\u306b\u4f3c\u305f\u8a71\u3067\u3059\u304c\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u9593\u306e\u3084\u308a\u3068\u308a\u306b\u3082\u4f7f\u3048\u307e\u3059\u3002\u3068\u304f\u306bReact\u3084Vue.js\u3068\u3044\u3063\u305f\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u30d9\u30fc\u30b9\u306e\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3067\u306f\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u9593\u3067\u30b9\u30bf\u30a4\u30eb\u306e\u3084\u308a\u3068\u308a\u306f\u5236\u9650\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3082\u591a\u3044\u3067\u3059\u3002\u305f\u3068\u3048\u3070\u3001\u89aa\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u30db\u30d0\u30fc\u72b6\u614b\u306e\u3068\u304d\u3001\u5b50\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u30b9\u30bf\u30a4\u30eb\u3092\u5909\u66f4\u3059\u308b\u3068\u3044\u3063\u305f\u5236\u5fa1\u306f\u610f\u5916\u3068\u9762\u5012\u3067\u3059\u3002<\/p>\n
    \u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30ab\u30fc\u30c9\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u304c\u3042\u3063\u305f\u3068\u3057\u307e\u3059\u3002\u3053\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306f\u30ab\u30fc\u30c9\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u304c\u89aa\u3067\u3001\u5b50\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3068\u3057\u3066\u30dc\u30bf\u30f3\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u3082\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n
    \"\u30ab\u30fc\u30c9\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u304c\u30db\u30d0\u30fc\u72b6\u614b\u306e\u3068\u304d\u3001\u5b50\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u30dc\u30bf\u30f3\u306e\u8272\u304c\u5909\u308f\u308b\"<\/p>\n
    \uff08\u30c7\u30e2\u304a\u3088\u3073\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3067\u306f\u6982\u5ff5\u3092\u7c21\u7565\u5316\u3057\u3066\u3044\u308b\u305f\u3081\u7d20\u306eHTML\u3068CSS\u3067\u8a18\u8ff0\u3057\u3066\u3044\u307e\u3059\uff09<\/p>\n
    \n.cardComponent<\/span> {\n  &:hover<\/span>{\n    .buttonComponent<\/span>{\n      color<\/span>: red;\n    }\n  }\n}\n<\/code><\/pre>\n
    \u3057\u304b\u3057\u3001CSS\u5909\u6570\u3092\u7d4c\u7531\u3059\u308c\u3070\u72b6\u614b\u306b\u3088\u308b\u5206\u5c90\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
    .cardComponent<\/span> {\n  --is-hover<\/span>: false;\n  &:hover<\/span>{\n    --is-hover<\/span>: true;\n  }\n}\n\n.buttonComponent<\/span> {\n  background-color<\/span>: if<\/span>(\n    style<\/span>(--is-hover: true): #31316d<\/span>;\n    else: #6767d2<\/span>;);\n}\n<\/code><\/pre>\n
    \u30db\u30d0\u30fc\u72b6\u614b\u306a\u3069\u306fCSS\u306e\u307b\u3046\u304cJavaScript\u3088\u308a\u7c21\u4fbf\u306a\u306e\u3067CSS\u306e\u307f\u3067\u5b9f\u73fe\u3067\u304d\u308b\u3068\u697d\u306a\u5834\u9762\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n
    \u307b\u304b\u306b\u3082\u968e\u5c64\u306e\u96e2\u308c\u305f\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u9593\u306e\u30b9\u30bf\u30a4\u30eb\u5236\u5fa1\u306b\u3082\u4f7f\u3048\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u30c9\u30e9\u30c3\u30b0\uff06\u30c9\u30ed\u30c3\u30d7\u3067\u3001\u30c9\u30e9\u30c3\u30b0\u4e2d\u306b\u30c9\u30ed\u30c3\u30d7\u53ef\u80fd\u306a\u30a8\u30ea\u30a2\u306e\u8272\u304c\u5909\u308f\u308b\u3088\u3046\u306a\u4f8b\u3067\u3059\u3002<\/p>\n
    \"\u30c9\u30e9\u30c3\u30b0\uff06\u30c9\u30ed\u30c3\u30d7\u3067\u30c9\u30ed\u30c3\u30d7\u9818\u57df\u306e\u8272\u304c\u5909\u308f\u308b\"<\/p>\n
    .dropArea<\/span> {\n  \n  &.typeA<\/span> {\n    border-color<\/span>: var<\/span>(--color-typeA);\n    &:not<\/span>(:has<\/span>(.draggableItem<\/span>)) {\n      background-color<\/span>: if<\/span>(\n        style<\/span>(--dragging-type: A): if<\/span>(\n          style<\/span>(--is-dragging-over: true): var<\/span>(--color-typeA-droppable-hover); \n          else: var<\/span>(--color-typeA-droppable);\n        );\n        else: transparent;\n      );\n    }\n  }\n  &.typeB<\/span> {\n    \n  }\n  &.typeC<\/span> {\n    \n  }\n}\n<\/code><\/pre>\n
    \u25bc\u30b9\u30bf\u30a4\u30eb\u95a2\u3059\u308b\u3082\u306e\u306e\u307f\u629c\u7c8b\u3002\u5225\u9014\u30c9\u30e9\u30c3\u30b0\u7d42\u4e86\u6642\u306e\u51e6\u7406\u3082\u3042\u308a\u3002<\/p>\n
    \nconst<\/span> handleDragStart<\/span> = (event<\/span>) => {\n  draggedElement = event.target<\/span>;\n  dragAndDropArea.style<\/span>.setProperty<\/span>(\"--dragging-type\"<\/span>, event.target<\/span>.dataset<\/span>.type<\/span>);\n  event.dataTransfer<\/span>.setData<\/span>(\"text\/type\"<\/span>, event.target<\/span>.dataset<\/span>.type<\/span>);\n}\n\n\nconst<\/span> handleDragOver<\/span> = (event, dropArea<\/span>) => {\n  event.preventDefault<\/span>(); \n  \n  const<\/span> draggedType = draggedElement.dataset<\/span>.type<\/span>;\n\n  \n  const<\/span> isEmpty = dropArea.querySelector<\/span>(\".draggableItem\"<\/span>) === null<\/span>;\n\n  \n  const<\/span> isSameType = draggedType === dropArea.dataset<\/span>.droppableType<\/span>;\n  if<\/span> (isEmpty && isSameType) {\n    dragAndDropArea.style<\/span>.setProperty<\/span>(\"--is-dragging-over\"<\/span>, \"true\"<\/span>);\n  }\n};\n<\/code><\/pre>\n
    \u30c9\u30e9\u30c3\u30b0\u306e\u72b6\u614b\u306b\u95a2\u3059\u308b2\u3064\u306eCSS\u5909\u6570\u3092\u8a2d\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002\u30c9\u30e9\u30c3\u30b0\u3057\u3066\u3044\u308b\u8981\u7d20\u3092\u8868\u3059--dragging-type<\/code>\u5909\u6570\u3068\u3001\u30c9\u30e9\u30c3\u30b0\u4e2d\u304b\u5426\u304b\u306e--is-dragging-over<\/code>\u5909\u6570\u3067\u3059\u3002\u3053\u308c\u30892\u3064\u306e\u5909\u6570\u3092\u5171\u901a\u7956\u5148\u8981\u7d20\u306e.dragAndDropArea<\/code>\u8981\u7d20\u306b\u30bb\u30c3\u30c8\u3057\u3001\u30c9\u30ed\u30c3\u30d7\u53ef\u80fd\u306a\u67a0\u306e\u8272\u3092\u5909\u66f4\u3057\u307e\u3059\u3002\u30c9\u30ed\u30c3\u30d7\u30a8\u30ea\u30a2\u304b\u3089\u898b\u3066\u3001\u30c9\u30ed\u30c3\u30d7\u53ef\u80fd\u306a\u8981\u7d20\u3067\u3042\u308c\u3070\u80cc\u666f\u8272\u304c\u5909\u308f\u308a\u3001\u30c9\u30e9\u30c3\u30b0\u30aa\u30fc\u30d0\u30fc\u3055\u308c\u3066\u3044\u305f\u3089\u6fc3\u3044\u8272\u306b\u5909\u308f\u308b\u3068\u3044\u3046\u51e6\u7406\u3092CSS\u3067\u8a18\u8ff0\u3067\u304d\u307e\u3059\u3002<\/p>\n
    if()\u95a2\u6570\u306e\u5371\u967a\u306a\u304b\u304a\u308a<\/h3>\n
    if()<\/code>\u95a2\u6570\u306f\u5f37\u529b\u306a\u30c4\u30fc\u30eb\u3067\u3059\u304c\u3001\u4f7f\u3044\u65b9\u306b\u3088\u3063\u3066\u306f\u5371\u306a\u3044\u9762\u3082\u3042\u308a\u307e\u3059\u3002CSS\u5909\u6570\u306f\u5b50\u5b6b\u8981\u7d20\u3067\u3042\u308c\u3070\u305d\u306e\u5024\u306e\u4e0a\u66f8\u304d\u304c\u53ef\u80fd\u3067\u3059\u3002\u60f3\u5b9a\u5916\u306e\u4e0a\u66f8\u304d\u3067\u610f\u56f3\u3057\u306a\u3044\u30b9\u30bf\u30a4\u30eb\u304c\u9069\u7528\u3055\u308c\u3066\u3057\u307e\u3046\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u307e\u305f\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u5185\u3067\u4f7f\u308f\u308c\u308bCSS\u5909\u6570\u306f\u540c\u540d\u306eCSS\u5909\u6570\u304c\u8907\u6570\u5b58\u5728\u3059\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\u540c\u3058\u5909\u6570\u540d\u3067\u3082\u5148\u7956\u8981\u7d20\u306e\u6761\u4ef6\u306b\u3088\u308a\u5024\u304c\u5909\u308f\u308b\u306e\u3067\u6df7\u4e71\u306e\u3082\u3068\u306b\u306a\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<\/p>\n
    \u3053\u308c\u3089\u306e\u554f\u984c\u306fif()<\/code>\u95a2\u6570\u81ea\u4f53\u306e\u554f\u984c\u3068\u3044\u3046\u3088\u308a\u306fCSS\u5909\u6570\u306e\u554f\u984c\u3067\u3059\u3002\u3057\u304b\u3057\u306a\u304c\u3089if()<\/code>\u95a2\u6570\u306b\u3088\u3063\u3066\u6761\u4ef6\u5206\u5c90\u304c\u53ef\u80fd\u306b\u306a\u308b\u3068\u3053\u308c\u3089\u306e\u554f\u984c\u304c\u3088\u308a\u8907\u96d1\u5316\u3059\u308b\u53ef\u80fd\u6027\u3092\u306f\u3089\u3093\u3067\u3044\u307e\u3059\u3002if()<\/code>\u95a2\u6570\u306f\u5f37\u529b\u306a\u6a5f\u80fd\u3067\u3042\u308b\u53cd\u9762\u3001CSS\u5909\u6570\u3092\u304d\u3061\u3093\u3068\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u3057\u306a\u3044\u3068\u6df7\u6c8c\u3068\u3057\u305fCSS\u3092\u751f\u307f\u51fa\u3059\u53ef\u80fd\u6027<\/strong>\u304c\u3042\u308a\u307e\u3059\u3002if()<\/code>\u95a2\u6570\u3092\u4f7f\u3046\u3068\u304d\u306f\u305d\u306e\u30b9\u30b3\u30fc\u30d7\u7bc4\u56f2\u3084\u5f71\u97ff\u7bc4\u56f2\u3092\u628a\u63e1\u3057\u305f\u3046\u3048\u3067\u4f7f\u3046\u306e\u304c\u3088\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n
    \u307e\u3068\u3081<\/h3>\n
    if()<\/code>\u95a2\u6570\u306e\u6027\u8cea\u3068\u305d\u306e\u5fdc\u7528\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3057\u305f\u3002\u5f37\u529b\u306a\u53cd\u9762\u3001\u8907\u96d1\u306aCSS\u3092\u751f\u3080\u53ef\u80fd\u6027\u3082\u3042\u308b\u8af8\u5203\u306e\u5263\u3067\u3082\u3042\u308a\u307e\u3059\u3002\u307e\u305f\u3001\u65e2\u5b58\u306e\u6280\u8853\u3067\u3082\u540c\u3058\u3053\u3068\u304c\u3067\u304d\u308b\u5834\u5408\u3082\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001if()<\/code>\u95a2\u6570\u306f\u65ac\u65b0\u3067\u8a71\u984c\u6027\u306e\u3042\u308b\u6a5f\u80fd\u3067\u3059\u304c\u3001\u5fc5\u9808\u3067\u7fd2\u5f97\u3059\u3079\u304d\u6280\u8853\u3067\u3082\u306a\u3044\u3067\u3057\u3087\u3046\u3002\u305f\u3060\u77e5\u3063\u3066\u304a\u304f\u3068\u3001\u305d\u3057\u3066\u7bc0\u5ea6\u3092\u3082\u3063\u3066\u4f7f\u3046\u3053\u3068\u3067\u56f0\u3063\u305f\u3068\u304d\u306b\u52a9\u3051\u3066\u304f\u308c\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<\/p>\n<\/div>\n\n
    \u5143\u306e\u8a18\u4e8b\u3092\u78ba\u8a8d\u3059\u308b <\/a><\/p>\n","protected":false},"excerpt":{"rendered":"CSS\u306e\u4ed5\u69d8\u306e\u7b56\u5b9a\u3092\u884c\u3063\u3066\u3044\u308bCSS Working Group\uff08CSSWG\uff09\u3067\u306f\u3001CSS\u306bif()\u95a2\u6570\u3092\u8ffd\u52a0\u3059\u308b\u63d0\u6848\u304c\u51fa\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u306eif()\u95a2\u6570\u306f\u6587\u5b57\u901a\u308aCSS\u306b\u304a\u3051\u308b\u5206\u5c90\u3092\u884c\u3046\u95a2\u6570\u3067\u3059\u3002\u4ed5\u69d8\u7b56\u5b9a\u4e2d\u3067\u306f\u3042\u308a\u307e\u3059\u304c […]","protected":false},"author":1,"featured_media":6151,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[2],"tags":[],"class_list":["post-6150","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-hatena-blog"],"acf":[],"yoast_head":"\n\u4fbf\u5229\uff1f\u3000\u305d\u308c\u3068\u3082\u6df7\u4e71\uff1f\u3000CSS\u306eif()\u95a2\u6570 - 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