{"id":666,"date":"2024-05-27T05:33:29","date_gmt":"2024-05-27T05:33:29","guid":{"rendered":"https:\/\/satokotadesign.com\/blog\/?p=666"},"modified":"2025-05-16T02:11:47","modified_gmt":"2025-05-16T02:11:47","slug":"css_absolute","status":"publish","type":"post","link":"https:\/\/satokotadesign.com\/blog\/css_absolute\/","title":{"rendered":"\u3010\u6700\u65b0\u3011CSS\u3067\u8981\u7d20\u3092\u4e2d\u592e\u306b\u914d\u7f6e\u3059\u308b\u65b9\u6cd5: position: absolute\u3068Flexbox\u306e\u4f7f\u3044\u65b9"},"content":{"rendered":"<p>\u3053\u3093\u306b\u3061\u306f\u9759\u5ca1\u770c\u6d5c\u677e\u5e02\u3067\u30d5\u30ea\u30fc\u30e9\u30f3\u30b9Web\u30c7\u30b6\u30a4\u30ca\u30fc\u306e\u5c0f\u7027\u3067\u3059\u3002<\/p>\n<p>Web\u30d6\u30c7\u30b6\u30a4\u30f3\u306b\u304a\u3044\u3066\u3001\u8981\u7d20\u3092\u4e2d\u592e\u306b\u914d\u7f6e\u3059\u308b\u3053\u3068\u306f\u3088\u304f\u3042\u308b\u8ab2\u984c\u306e\u4e00\u3064\u3067\u3059\u3088\u306d\u3002<br \/>\n\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u521d\u3081\u306f\u60a9\u3093\u3060\u308a\u3059\u308b\u554f\u984c\u3067\u3082\u3042\u308b\u306e\u3067\u3001\u305d\u3093\u306a\u65b9\u306b\u5411\u3051\u3066\u4eca\u56de\u306f\u899a\u3048\u3066\u304a\u304f\u3068\u826f\u3044\u65b9\u6cd5\u3092\u5099\u5fd8\u9332\u3068\u3057\u3066\u8a18\u8f09\u3057\u307e\u3059\u3002<br \/>\n\u8981\u7d20\u3092\u4e2d\u592e\u306b\u914d\u7f6e\u3059\u308b\u65b9\u6cd5\u306b\u306f\u3055\u307e\u3056\u307e\u306a\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u4eca\u56de\u306f\u7279\u306b position: absolute \u3068 Flexbox \u3092\u4f7f\u7528\u3057\u305f\u65b9\u6cd5\u3092\u8a73\u3057\u304f\u89e3\u8aac\u3057\u307e\u3059\u3002<br \/>\n\u3053\u308c\u3089\u306e\u30c6\u30af\u30cb\u30c3\u30af\u3092\u30de\u30b9\u30bf\u30fc\u3059\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u81ea\u7531\u81ea\u5728\u306a\u30ec\u30a4\u30a2\u30a6\u30c8\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3088\uff01<\/p>\n<h2 class=\"sc_heading solid blue\"><span class=\"sc_title\" >position: absolute \u3092\u4f7f\u3063\u305f\u4e2d\u592e\u914d\u7f6e<\/span><\/h2>\n<p>\u307e\u305a\u306f\u3001position: absolute \u3092\u4f7f\u3063\u305f\u4e2d\u592e\u914d\u7f6e\u306e\u65b9\u6cd5\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002\u3053\u306e\u65b9\u6cd5\u306f\u3001\u7279\u5b9a\u306e\u8981\u7d20\u3092\u89aa\u8981\u7d20\u306e\u4e2d\u592e\u306b\u914d\u7f6e\u3059\u308b\u969b\u306b\u4fbf\u5229\u3067\u3059\u3002<\/p>\n<div class=\"sc_heading bborder l blue\"><span class=\"sc_title\" >HTML<\/span><\/div>\n<pre class=\"line-numbers\"><code class=\"language-markup\">&lt;div class=&quot;container&quot;&gt;\r\n    &lt;div class=&quot;centered-element&quot;&gt;\u4e2d\u592e\u306b\u914d\u7f6e\u3059\u308b\u8981\u7d20&lt;\/div&gt;\r\n&lt;\/div&gt;\r\n<\/code><\/pre>\n<div class=\"sc_heading bborder l blue\"><span class=\"sc_title\" >CSS<\/span><\/div>\n<pre class=\"line-numbers\"><code class=\"language-css\">.container {\r\n    position: relative;  \/* \u89aa\u8981\u7d20\u306f relative \u3092\u8a2d\u5b9a *\/\r\n    width: 100%;\r\n    height: 100vh;  \/* \u9ad8\u3055\u3092\u30d3\u30e5\u30fc\u9ad8\u3055\u306b\u8a2d\u5b9a *\/\r\n}\r\n\r\n.centered-element {\r\n    position: absolute;\r\n    top: 50%;\r\n    left: 50%;\r\n    transform: translate(-50%, -50%);  \/* \u8981\u7d20\u306e\u4e2d\u592e\u3092\u57fa\u6e96\u306b\u4f4d\u7f6e\u3092\u8abf\u6574 *\/\r\n}\r\n<\/code><\/pre>\n<h3 class=\"sc_heading bborder b blue\"><span class=\"sc_title\" >\u89e3\u8aac<\/span><\/h3>\n<div class=\"sc_designlist ol radius solid  blue\">\n<ol>\n<li>\u89aa\u8981\u7d20\u306b position: relative \u3092\u8a2d\u5b9a<\/li>\n<li>\u5b50\u8981\u7d20\u306b position: absolute \u3092\u8a2d\u5b9a<\/li>\n<li>transform: translate(-50%, -50%) \u3092\u4f7f\u7528<\/li>\n<\/ol>\n<\/div>\n<h4 class=\"sc_heading bborder l blue\"><span class=\"sc_title\" >1.\u89aa\u8981\u7d20\u306b position: relative \u3092\u8a2d\u5b9a<\/span><\/h4>\n<p>\u89aa\u8981\u7d20\u306b position: relative \u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u5b50\u8981\u7d20\u306e position: absolute \u304c\u89aa\u8981\u7d20\u306b\u5bfe\u3057\u3066\u76f8\u5bfe\u7684\u306b\u914d\u7f6e\u3055\u308c\u307e\u3059\u3002<\/p>\n<h4 class=\"sc_heading bborder l blue\"><span class=\"sc_title\" >2.\u5b50\u8981\u7d20\u306b position: absolute \u3092\u8a2d\u5b9a<\/span><\/h4>\n<p>\u5b50\u8981\u7d20\u306b position: absolute \u3092\u8a2d\u5b9a\u3057\u3001top: 50% \u3068 left: 50% \u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u5b50\u8981\u7d20\u306e\u5de6\u4e0a\u9685\u304c\u89aa\u8981\u7d20\u306e\u4e2d\u5fc3\u306b\u914d\u7f6e\u3055\u308c\u307e\u3059\u3002<\/p>\n<h4 class=\"sc_heading bborder l blue\"><span class=\"sc_title\" >3.transform: translate(-50%, -50%) \u3092\u4f7f\u7528<\/span><\/h4>\n<p>\u3053\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u8981\u7d20\u81ea\u8eab\u306e\u5e45\u3068\u9ad8\u3055\u306e50%\u5206\u3092\u9006\u65b9\u5411\u306b\u79fb\u52d5\u3055\u305b\u3001\u8981\u7d20\u306e\u4e2d\u5fc3\u304c\u89aa\u8981\u7d20\u306e\u4e2d\u5fc3\u306b\u4e00\u81f4\u3059\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n<h2 class=\"sc_heading solid blue\"><span class=\"sc_title\" >Flexbox \u3092\u4f7f\u3063\u305f\u4e2d\u592e\u914d\u7f6e<\/span><\/h2>\n<p>\u6b21\u306b\u3001\u3088\u308a\u7c21\u6f54\u3067\u67d4\u8edf\u306a Flexbox \u3092\u4f7f\u3063\u305f\u4e2d\u592e\u914d\u7f6e\u306e\u65b9\u6cd5\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002Flexbox \u306f CSS \u306e\u30ec\u30a4\u30a2\u30a6\u30c8\u30e2\u30c7\u30eb\u3067\u3001\u8981\u7d20\u3092\u7c21\u5358\u306b\u4e2d\u592e\u63c3\u3048\u306b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<div class=\"sc_heading bborder l blue\"><span class=\"sc_title\" >HTML<\/span><\/div>\n<pre class=\"line-numbers\"><code class=\"language-markup\">&lt;div class=&quot;flex-container&quot;&gt;\r\n    &lt;div class=&quot;centered-element&quot;&gt;\u4e2d\u592e\u306b\u914d\u7f6e\u3059\u308b\u8981\u7d20&lt;\/div&gt;\r\n&lt;\/div&gt;\r\n<\/code><\/pre>\n<div class=\"sc_heading bborder l blue\"><span class=\"sc_title\" >CSS<\/span><\/div>\n<pre class=\"line-numbers\"><code class=\"language-css\">.flex-container {\r\n    display: flex;\r\n    justify-content: center;  \/* \u6c34\u5e73\u65b9\u5411\u306e\u4e2d\u592e\u63c3\u3048 *\/\r\n    align-items: center;  \/* \u5782\u76f4\u65b9\u5411\u306e\u4e2d\u592e\u63c3\u3048 *\/\r\n    width: 100%;\r\n    height: 100vh;  \/* \u9ad8\u3055\u3092\u30d3\u30e5\u30fc\u9ad8\u3055\u306b\u8a2d\u5b9a *\/\r\n}\r\n\r\n.centered-element {\r\n    \/* position: absolute \u306f\u4e0d\u8981 *\/\r\n}\r\n<\/code><\/pre>\n<h3 class=\"sc_heading bborder b blue\"><span class=\"sc_title\" >\u89e3\u8aac<\/span><\/h3>\n<div class=\"sc_designlist ol radius solid  blue\">\n<ol>\n<li>\u89aa\u8981\u7d20\u306b display: flex \u3092\u8a2d\u5b9a<\/li>\n<li>justify-content: center \u3092\u8a2d\u5b9a<\/li>\n<li>align-items: center \u3092\u8a2d\u5b9a<\/li>\n<\/ol>\n<\/div>\n<h4 class=\"sc_heading bborder l blue\"><span class=\"sc_title\" >1.\u89aa\u8981\u7d20\u306b display: flex \u3092\u8a2d\u5b9a<\/span><\/h4>\n<p>\u89aa\u8981\u7d20\u306b display: flex \u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001Flexbox \u306e\u30ec\u30a4\u30a2\u30a6\u30c8\u30b3\u30f3\u30c6\u30ca\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<h4 class=\"sc_heading bborder l blue\"><span class=\"sc_title\" >2.justify-content: center \u3092\u8a2d\u5b9a<\/span><\/h4>\n<p>justify-content: center \u3092\u4f7f\u7528\u3057\u3066\u3001\u5b50\u8981\u7d20\u3092\u6c34\u5e73\u65b9\u5411\u306b\u4e2d\u592e\u63c3\u3048\u3057\u307e\u3059\u3002<\/p>\n<h4 class=\"sc_heading bborder l blue\"><span class=\"sc_title\" >3.align-items: center \u3092\u8a2d\u5b9a<\/span><\/h4>\n<p>align-items: center \u3092\u4f7f\u7528\u3057\u3066\u3001\u5b50\u8981\u7d20\u3092\u5782\u76f4\u65b9\u5411\u306b\u4e2d\u592e\u63c3\u3048\u3057\u307e\u3059\u3002<\/p>\n<h2 class=\"sc_heading solid blue\"><span class=\"sc_title\" >\u3069\u3061\u3089\u306e\u65b9\u6cd5\u3092\u9078\u3076\u3079\u304d\u304b\uff1f<\/span><\/h2>\n<p><span class=\"sc_marker-animation\">\u3069\u3061\u3089\u306e\u65b9\u6cd5\u3082\u6709\u52b9\u3067\u3059\u304c\u3001\u7528\u9014\u306b\u5fdc\u3058\u3066\u4f7f\u3044\u5206\u3051\u308b\u3068\u826f\u3044\u3067\u3059\uff01<\/span><\/p>\n<div class=\"sc_frame_wrap inline  orange\">\n<div class=\"sc_frame_title\">position: absolute<\/div>\n<div class=\"sc_frame \">\n<div class=\"sc_frame_text\">\u3053\u306e\u65b9\u6cd5\u306f\u3001\u7279\u5b9a\u306e\u8981\u7d20\u3092\u56fa\u5b9a\u4f4d\u7f6e\u306b\u914d\u7f6e\u3059\u308b\u969b\u306b\u4fbf\u5229\u3067\u3059\u3002\u307e\u305f\u3001\u30ec\u30a4\u30a2\u30a6\u30c8\u306e\u5fae\u8abf\u6574\u304c\u5fc5\u8981\u306a\u5834\u5408\u306b\u3082\u9069\u3057\u3066\u3044\u307e\u3059\u3002<\/div>\n<\/div>\n<\/div>\n<div class=\"sc_frame_wrap inline  orange\">\n<div class=\"sc_frame_title\">Flexbox<\/div>\n<div class=\"sc_frame \">\n<div class=\"sc_frame_text\">Flexbox \u306f\u3001\u30ec\u30b9\u30dd\u30f3\u30b7\u30d6\u30c7\u30b6\u30a4\u30f3\u306b\u975e\u5e38\u306b\u9069\u3057\u3066\u304a\u308a\u3001\u8907\u96d1\u306a\u30ec\u30a4\u30a2\u30a6\u30c8\u3067\u3082\u7c21\u5358\u306b\u4e2d\u592e\u63c3\u3048\u304c\u3067\u304d\u307e\u3059\u3002\u8981\u7d20\u3092\u7c21\u6f54\u306b\u4e2d\u592e\u914d\u7f6e\u3057\u305f\u3044\u5834\u5408\u3084\u3001\u8907\u6570\u306e\u8981\u7d20\u3092\u5747\u7b49\u306b\u914d\u7f6e\u3057\u305f\u3044\u5834\u5408\u306b\u7279\u306b\u4fbf\u5229\u3067\u3059\u3002<\/div>\n<\/div>\n<\/div>\n<h2 class=\"sc_heading solid blue\"><span class=\"sc_title\" >\u307e\u3068\u3081<\/span><\/h2>\n<p>\u8981\u7d20\u3092\u4e2d\u592e\u306b\u914d\u7f6e\u3059\u308b\u3053\u3068\u306f\u3001\u30a6\u30a7\u30d6\u30c7\u30b6\u30a4\u30f3\u306b\u304a\u3044\u3066\u983b\u7e41\u306b\u6c42\u3081\u3089\u308c\u308b\u30bf\u30b9\u30af\u3067\u3059\u3002<br \/>\n<span class=\"sc_marker-animation\">position: absolute \u3092\u4f7f\u3046\u65b9\u6cd5\u3068 Flexbox \u3092\u4f7f\u3046\u65b9\u6cd5\u306e\u4e21\u65b9\u3092\u30de\u30b9\u30bf\u30fc\u3059\u308b\u3053\u3068\u3067\u3001\u3055\u307e\u3056\u307e\u306a\u30b7\u30c1\u30e5\u30a8\u30fc\u30b7\u30e7\u30f3\u306b\u5bfe\u5fdc\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/span><br \/>\n\u4eca\u56de\u7d39\u4ecb\u3057\u305f\u30c6\u30af\u30cb\u30c3\u30af\u3092\u6d3b\u7528\u3057\u3066\u3001\u7f8e\u3057\u304f\u6574\u3063\u305f\u30ec\u30a4\u30a2\u30a6\u30c8\u3092\u5b9f\u73fe\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\uff01<\/p>\n<h3 class=\"sc_heading bborder b blue\"><span class=\"sc_title\" >\u8ffd\u52a0\u306e\u30d2\u30f3\u30c8<\/span><\/h3>\n<div class=\"sc_designlist li fa_check  blue\">\n<ul>\n<li>\u30ec\u30b9\u30dd\u30f3\u30b7\u30d6\u30c7\u30b6\u30a4\u30f3: Flexbox \u306f\u30ec\u30b9\u30dd\u30f3\u30b7\u30d6\u30c7\u30b6\u30a4\u30f3\u306b\u9069\u3057\u3066\u3044\u308b\u305f\u3081\u3001\u753b\u9762\u30b5\u30a4\u30ba\u306b\u5fdc\u3058\u3066\u8981\u7d20\u3092\u67d4\u8edf\u306b\u914d\u7f6e\u3067\u304d\u307e\u3059\u3002<\/li>\n<li>\u30d6\u30e9\u30a6\u30b6\u306e\u4e92\u63db\u6027: 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Web\u30d6\u30c7\u30b6\u30a4\u30f3\u306b\u304a\u3044\u3066\u3001\u8981\u7d20\u3092\u4e2d\u592e\u306b\u914d\u7f6e\u3059\u308b\u3053\u3068\u306f\u3088\u304f\u3042\u308b\u8ab2\u984c\u306e\u4e00\u3064\u3067\u3059\u3088\u306d\u3002 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