{"id":876,"date":"2021-02-22T08:30:00","date_gmt":"2021-02-22T00:30:00","guid":{"rendered":"https:\/\/\/?p=876"},"modified":"2022-01-16T15:19:53","modified_gmt":"2022-01-16T07:19:53","slug":"css-position-relative-absolute","status":"publish","type":"post","link":"https:\/\/\/css-position-relative-absolute\/","title":{"rendered":"CSS position \u5c6c\u6027\u6559\u5b78\uff1arelative\u548cabsolute\u5be6\u4f5c"},"content":{"rendered":"\n<p>CSS\u7684position\u5c6c\u6027\u53ef\u4ee5\u8b93\u4f60\u8a2d\u5b9a\u4f4d\u7f6e\uff0c\u5e38\u7528\u7684\u5305\u542b\u4ee5\u4e0b\u56db\u7a2e\uff1a<\/p>\n\n\n\n<ul><li>fixed<\/li><li>sticky<\/li><li>relative<\/li><li>absolute<\/li><\/ul>\n\n\n\n<p>\u5176\u4e2d\uff0c\u524d\u5169\u8005\u666e\u904d\u7528\u65bc<a href=/index.html"https:\/\/medium.com\/@mingjunlu\/building-a-simple-navbar-with-html-and-css-setting-up-the-skeleton-212fb8767cb5\" target=\"_blank\" rel=\"noreferrer noopener\">\u7db2\u9801\u5c0e\u89bd\u5217<\/a>\u3001\u5f48\u8df3\u8996\u7a97\u7b49\u529f\u80fd\uff1b<br>\u5f8c\u5169\u8005\u5247\u53ef\u4ee5\u7528\u5728\u5404\u5f0f\u5404\u6a23\u7684\u76f8\u5c0d\u4f4d\u7f6e\u7576\u4e2d\uff0c\u662f\u500b<strong>\u975e\u5e38\u5be6\u7528\u7684\u6392\u7248\u5c6c\u6027\uff01<\/strong><\/p>\n\n\n\n<p>\u9019\u7bc7\u4e3b\u8981\u5e36\u5927\u5bb6\u4e86\u89e3relative\u548cabsolute\u5c6c\u6027\uff0c\u4ee5\u53ca\u76f8\u5c0d\u4f4d\u7f6e\u7a76\u7adf\u8a72\u600e\u9ebc\u9032\u884c\u8a2d\u5b9a\u5427\uff01<\/p>\n\n\n\n<script async=\"\" src=/index.html"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\n<!-- horizontal ads -->\n<ins class=\"adsbygoogle\" style=\"display:block\" data-ad-client=\"ca-pub-5595715547350173\" data-ad-slot=\"1989045921\" data-ad-format=\"auto\" data-full-width-responsive=\"true\"><\/ins>\n<script>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script>\n\n\n\n<p><\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_64 counter-hierarchy ez-toc-counter ez-toc-light-blue ez-toc-container-direction\">\n<p class=\"ez-toc-title\">\u5167\u5bb9\u76ee\u9304<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-66130b714093b\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-66130b714093b\"  aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=/index.html"https:\/\/\/css-position-relative-absolute\/#CSS_position_%E7%9B%B8%E5%B0%8D%E4%BD%8D%E7%BD%AE%E5%85%A5%E9%96%80%E5%AE%9A%E7%BE%A9\" title=\"CSS position \u76f8\u5c0d\u4f4d\u7f6e\u5165\u9580\u5b9a\u7fa9\">CSS position \u76f8\u5c0d\u4f4d\u7f6e\u5165\u9580\u5b9a\u7fa9<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=/index.html"https:\/\/\/css-position-relative-absolute\/#position_relative%E5%92%8Cabsolute%E5%AF%A6%E4%BD%9C%E7%AF%84%E4%BE%8B\" title=\"position relative\u548cabsolute\u5be6\u4f5c\u7bc4\u4f8b\">position relative\u548cabsolute\u5be6\u4f5c\u7bc4\u4f8b<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=/index.html"https:\/\/\/css-position-relative-absolute\/#%E9%80%8F%E9%81%8Eabsolute%E6%96%B0%E5%A2%9E%E4%BD%8D%E7%BD%AE%E5%B1%AC%E6%80%A7%E9%8C%AF%E9%96%8B%E4%BD%8D%E7%BD%AE\" title=\"\u900f\u904eabsolute\u65b0\u589e\u4f4d\u7f6e\u5c6c\u6027\u932f\u958b\u4f4d\u7f6e\">\u900f\u904eabsolute\u65b0\u589e\u4f4d\u7f6e\u5c6c\u6027\u932f\u958b\u4f4d\u7f6e<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=/index.html"https:\/\/\/css-position-relative-absolute\/#%E7%9B%B8%E5%B0%8D%E4%BD%8D%E7%BD%AE%E4%BB%A5%E5%BA%A7%E6%A8%99%E4%BE%86%E8%A7%A3%E9%87%8B\" title=\"\u76f8\u5c0d\u4f4d\u7f6e\u4ee5\u5ea7\u6a19\u4f86\u89e3\u91cb\">\u76f8\u5c0d\u4f4d\u7f6e\u4ee5\u5ea7\u6a19\u4f86\u89e3\u91cb<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=/index.html"https:\/\/\/css-position-relative-absolute\/#%E7%B8%BD%E7%B5%90\" title=\"\u7e3d\u7d50\">\u7e3d\u7d50<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"has-palette-color-4-color has-text-color has-background wp-block-heading\" style=\"background-color:#ffe1da\"><span class=\"ez-toc-section\" id=\"CSS_position_%E7%9B%B8%E5%B0%8D%E4%BD%8D%E7%BD%AE%E5%85%A5%E9%96%80%E5%AE%9A%E7%BE%A9\"><\/span>CSS position \u76f8\u5c0d\u4f4d\u7f6e\u5165\u9580\u5b9a\u7fa9<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u76f8\u5c0d\u4f4d\u7f6e\u7684\u6982\u5ff5\uff0c\u6211\u5011\u4ee5<strong>\u6700\u7c97\u7cd9\u7684\u8209\u4f8b<\/strong>\u4f86\u8aaa\uff1a<\/p>\n\n\n\n<p>\u8996\u7a97\u5167\u51fa\u73fe\u82f1\u6587\u5b57\u6bcd\u4e26\u5448\u73fe\uff1a\u300cAB\u300d<br>\u6211\u5011\u5982\u679c\u5148\u653e\u4e0a\u300cA\u300d\u70ba\u57fa\u6e96\u4f4d\u7f6e\uff0c\u4e26\u628a\u300cB\u300d\u8a2d\u5728\u300cA\u300d\u7684\u53f3\u908a\uff0c\u5448\u73fe\u51fa\u4f86\u5c31\u6703\u662f\u300cAB\u300d\u4e86\u3002<\/p>\n\n\n\n<p>\u6b64\u6642\u7684\u300cA\u300d\u4f5c\u70ba\u57fa\u6e96\uff0c\u56e0\u6b64\u300cA\u300d\u7684CSS\u8a2d\u5b9a\u5373\u70baposition:relative;<br>\u800c\u300cB\u300d\u76f8\u5c0d\u65bc\u300cA\u300d\u653e\u7f6e\u5728\u53f3\u908a\uff0c\u56e0\u6b64\u300cB\u300d\u7684CSS\u8a2d\u5b9a\u5373\u70baposition:absolute;<\/p>\n\n\n\n<p>\u4f46<strong>\u4e8b\u5be6\u4e0aCSS\u5be6\u4f5c\u9084\u5305\u62ec\u4e86\u5167\u5916\u95dc\u4fc2<\/strong>\uff0c\u4e5f\u5c31\u662f\u8aaa\u901a\u5e38<strong>\u5916\u5c64\u662fposition:relative; \u5167\u5c64\u70baposition:absolute;<\/strong> \u5167\u5c64\u7684\u5167\u5bb9\u5c31\u6703\u4ee5\u5916\u5c64\u7684\u5de6\u4e0a\u89d2\u70ba\u57fa\u6e96\u9032\u884c\u76f8\u5c0d\u65bc\u5916\u5c64\u7684\u79fb\u52d5\u3002<\/p>\n\n\n\n<h2 class=\"has-palette-color-4-color has-text-color has-background wp-block-heading\" style=\"background-color:#ffe1da\"><span class=\"ez-toc-section\" id=\"position_relative%E5%92%8Cabsolute%E5%AF%A6%E4%BD%9C%E7%AF%84%E4%BE%8B\"><\/span>position relative\u548cabsolute\u5be6\u4f5c\u7bc4\u4f8b<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u9019\u88e1\u5e36\u5927\u5bb6\u5be6\u4f5c\u4e00\u500b\u6700\u7c21\u55ae\u7684\u7bc4\u4f8b\uff0c\u8b93\u5927\u5bb6\u65b9\u4fbf\u7406\u89e3\u5169\u8005\u76f8\u5c0d\u4f4d\u7f6e\u95dc\u4fc2\u3002<\/p>\n\n\n\n<p>\u9996\u5148\uff0cHTML\u90e8\u5206\u653e\u4e0a\u5169\u5c64\u7684div\uff0c\u5206\u5225\u7d66\u4e88class\uff0c\u5167\u5bb9\u7686\u7559\u7a7a\u5373\u53ef\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code><span style=\"color:#929292\" class=\"has-inline-color\">&lt;!-- HTML --&gt;<\/span>\n\n&lt;div class=\"relative_outside\"&gt;\n  &lt;div class=\"absolute_inside\"&gt;\n    <span style=\"color:#929292\" class=\"has-inline-color\">&lt;!-- \u7559\u7a7a --&gt;<\/span>\n  &lt;\/div&gt;\n&lt;\/div&gt;<\/code><\/pre>\n\n\n\n<p>\u63a5\u4e0b\u4f86\uff0c\u5148\u5b8c\u6210\u6700\u57fa\u672c\u7684class\u8a2d\u5b9a\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code><span style=\"color:#929292\" class=\"has-inline-color\">\/* CSS *\/\n\n\/* \u7d05\u8272\u5916\u5c64 *\/<\/span>\n.relative_outside{\n  position: relative; <span style=\"color:#929292\" class=\"has-inline-color\">\/* \u57fa\u6e96\u8a2d\u70barelative *\/<\/span>\n  width: 100px;\n  height: 100px;\n  background: red; <span style=\"color:#929292\" class=\"has-inline-color\">\/* \u8a2d\u70ba\u7d05\u8272 *\/<\/span>\n}\n\n<span style=\"color:#929292\" class=\"has-inline-color\">\/* \u7da0\u8272\u5167\u5c64 *\/<\/span>\n.absolute_inside{\n  position: absolute; <span style=\"color:#929292\" class=\"has-inline-color\">\/* \u76f8\u5c0d\u8005\u8a2d\u70baabsolute *\/<\/span>\n  width: 100px;\n  height: 100px;\n  background: green; <span style=\"color:#929292\" class=\"has-inline-color\">\/* \u8a2d\u70ba\u7da0\u8272 *\/<\/span>\n}<\/code><\/pre>\n\n\n\n<p>\u8a2d\u5b8cHTML\u548cCSS\u5f8c\uff0c\u4f60\u6703\u4e86\u89e3\u5230\u5e7e\u4ef6\u4e8b\uff1a<\/p>\n\n\n\n<ol><li>\u73fe\u5728\u6709\u5169\u500b\u5bec\u9ad8\u7686\u70ba100\u7684\u6b63\u65b9\u5f62\uff0c\u4e00\u500b\u662f\u5916\u5c64\u7d05\u8272\u3001\u4e00\u500b\u662f\u5167\u5c64\u7da0\u8272\u3002<\/li><li>\u5916\u5c64\u7d05\u8272\u6b63\u65b9\u5f62\u7576\u4f5c\u57fa\u6e96\uff1b<br>\u5167\u5c64\u7da0\u8272\u6b63\u65b9\u5f62\u70ba\u76f8\u5c0d\u65bc\u7d05\u8272\u6b63\u65b9\u5f62\u7684\u76f8\u5c0d\u7269\u4ef6\u3002<\/li><li>\u5169\u8005\u6709\u968e\u5c64\u95dc\u4fc2\uff0c\u7da0\u8272\u96d6\u7136\u5927\u5c0f\u76f8\u540c\uff0c\u4f46\u5be6\u969b\u4e0aHTML\u662f\u5728\u5167\u5c64\u3002<\/li><\/ol>\n\n\n\n<p>\u6b64\u6642\u8a2d\u5b9a\u5b8c\u6703\u9577\u9019\u6a23\uff1a<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"304\" height=\"291\" src=/index.html"https:\/\/i0.wp.com\/\/wp-content\/uploads\/2021\/02\/green1-1.png?resize=304%2C291&#038;ssl=1\" alt=\"position\u76f8\u5c0d\u4f4d\u7f6e\u5c6c\u6027\u7bc4\u4f8b\" class=\"wp-image-891\" title=\"position\u76f8\u5c0d\u4f4d\u7f6e\u5c6c\u6027\u7bc4\u4f8b\" srcset=\"https:\/\/i0.wp.com\/\/wp-content\/uploads\/2021\/02\/green1-1.png?w=304&amp;ssl=1 304w, https:\/\/i0.wp.com\/\/wp-content\/uploads\/2021\/02\/green1-1.png?resize=300%2C287&amp;ssl=1 300w\" sizes=\"(max-width: 304px) 100vw, 304px\" data-recalc-dims=\"1\" \/><figcaption>position\u76f8\u5c0d\u4f4d\u7f6e\u5c6c\u6027\u7bc4\u4f8b<\/figcaption><\/figure><\/div>\n\n\n\n<p>\u6c92\u932f\uff0c\u76ee\u524d\u53ea\u770b\u5230\u4e00\u500b\u7da0\u8272\u6b63\u65b9\u5f62\uff0c\u539f\u56e0\u662f\u7d05\u8272\u6b63\u65b9\u5f62\u548c\u7da0\u8272\u6b63\u65b9\u5f62\u7684\u4f4d\u7f6e\u76f8\u540c\u3001\u5927\u5c0f\u4e5f\u76f8\u540c\uff0c\u56e0\u6b64\u7da0\u8272\u6b63\u65b9\u5f62\u84cb\u5728\u7d05\u8272\u6b63\u65b9\u5f62\u4e0a\u9762\u3002<\/p>\n\n\n\n<h2 class=\"has-palette-color-4-color has-text-color has-background wp-block-heading\" style=\"background-color:#ffe1da\"><span class=\"ez-toc-section\" id=\"%E9%80%8F%E9%81%8Eabsolute%E6%96%B0%E5%A2%9E%E4%BD%8D%E7%BD%AE%E5%B1%AC%E6%80%A7%E9%8C%AF%E9%96%8B%E4%BD%8D%E7%BD%AE\"><\/span>\u900f\u904eabsolute\u65b0\u589e\u4f4d\u7f6e\u5c6c\u6027\u932f\u958b\u4f4d\u7f6e<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u63a5\u4e0b\u4f86\uff0c\u6211\u5011\u5c07position:absolute;\u7684\u7da0\u8272\u6b63\u65b9\u5f62\uff0c\u52a0\u4e0atop\u548cleft\u7684\u4f4d\u7f6e\u5c6c\u6027\uff0ctop\u5c6c\u6027\uff1a\u5782\u76f4\u8207\u4e0a\u65b9\u7684\u8ddd\u96e2\uff1bleft\u5c6c\u6027\uff1a\u6c34\u5e73\u8207\u5de6\u908a\u7684\u8ddd\u96e2\u3002<\/p>\n\n\n\n<p>\u65b0\u589e\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code><span style=\"color:#929292\" class=\"has-inline-color\">\/* CSS *\/<\/span>\n\n<span style=\"color:#929292\" class=\"has-inline-color\">\/* \u7da0\u8272\u5167\u5c64 *\/<\/span>\n.absolute_inside{\n  position: absolute;\n  width: 100px;\n  height: 100px;\n  background: green;\n\n  <span style=\"color:#929292\" class=\"has-inline-color\">\/* \u52a0\u4e0a\u4e0b\u9762\u5169\u500b\u5c6c\u6027 *\/<\/span>\n  top: 100px;\n  left: 100px;\n}<\/code><\/pre>\n\n\n\n<p>\u9019\u6642\u5019\u7684\u610f\u601d\u5c31\u662f\uff0c\u7da0\u8272\u7684\u6b63\u65b9\u5f62\u6703\u76f8\u5c0d\u65bc\u7d05\u8272\u6b63\u65b9\u5f62\u5f80\u4e0b\u63a8100px\u4ee5\u53ca\u5f80\u53f3\u63a8100px\u3002<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"270\" height=\"267\" src=/index.html"https:\/\/i0.wp.com\/\/wp-content\/uploads\/2021\/02\/green2.png?resize=270%2C267&#038;ssl=1\" alt=\"position\u76f8\u5c0d\u4f4d\u7f6e\u5c6c\u6027\u7bc4\u4f8b\" class=\"wp-image-890\" title=\"position\u76f8\u5c0d\u4f4d\u7f6e\u5c6c\u6027\u7bc4\u4f8b\" data-recalc-dims=\"1\"\/><figcaption>position\u76f8\u5c0d\u4f4d\u7f6e\u5c6c\u6027\u7bc4\u4f8b<\/figcaption><\/figure><\/div>\n\n\n\n<p>\u5b8c\u6210\u5c31\u6703\u662f\u4e0a\u5716\u6240\u793a\uff0c\u53ef\u4ee5\u5c07\u9019\u500b\u7bc4\u4f8b\u7684\u7a0b\u5f0f\u78bc\u653e\u5230\u4f60\u7684\u7a0b\u5f0f\u78bc\u9032\u884c\u6e2c\u8a66\uff0c\u4e26\u4e14\u73a9\u73a9\u770b\u4fee\u6539top\u548cleft\u5c6c\u6027\uff0c\u5c31\u6703\u66f4\u597d\u7406\u89e3\u76f8\u5c0d\u4f4d\u7f6e\u7684\u529f\u7528\u4e86\u3002<\/p>\n\n\n\n<h2 class=\"has-palette-color-4-color has-text-color has-background wp-block-heading\" style=\"background-color:#ffe1da\"><span class=\"ez-toc-section\" id=\"%E7%9B%B8%E5%B0%8D%E4%BD%8D%E7%BD%AE%E4%BB%A5%E5%BA%A7%E6%A8%99%E4%BE%86%E8%A7%A3%E9%87%8B\"><\/span>\u76f8\u5c0d\u4f4d\u7f6e\u4ee5\u5ea7\u6a19\u4f86\u89e3\u91cb<span 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src=/index.html"https:\/\/i0.wp.com\/\/wp-content\/uploads\/2021\/02\/green2-1.png?resize=283%2C267&#038;ssl=1\" alt=\"position\u76f8\u5c0d\u4f4d\u7f6e\u5c6c\u6027\u7bc4\u4f8b\" class=\"wp-image-893\" title=\"position\u76f8\u5c0d\u4f4d\u7f6e\u5c6c\u6027\u7bc4\u4f8b\" data-recalc-dims=\"1\"\/><figcaption>position\u76f8\u5c0d\u4f4d\u7f6e\u5c6c\u6027\u7bc4\u4f8b<\/figcaption><\/figure><\/div>\n\n\n\n<p>\u7d05\u8272\u6b63\u65b9\u5f62\u5de6\u4e0a\u89d2\u70ba(0,0)\uff0c\u7da0\u8272\u6b63\u65b9\u5f62\u8a2d\u5b9a\u76f8\u5c0d\u65bc\u7d05\u8272\u6b63\u65b9\u5f62\u7684\u4f4d\u7f6e\u4e2d\uff0ctop\u5373\u70ba\u8207\u9802\u7aef\u7684\u8ddd\u96e2100px\uff1bleft\u70ba\u8207\u5de6\u5074\u7684\u8ddd\u96e2100px\u3002<\/p>\n\n\n\n<p>\u56e0\u6b64\u7406\u89e3\u5f8c\u6703\u8b8a\u6210\u5f80\u4e0b\u53ca\u5f80\u53f3\u5404\u63a8100px\uff0c\u6700\u5f8c\u7da0\u8272\u6b63\u65b9\u5f62\u5c31\u6703\u63a8\u81f3\u5ea7\u6a19\u70ba(100,100)\u7684\u4f4d\u7f6e\u5982\u4e0a\u5716\u6240\u793a\u3002<\/p>\n\n\n\n<h2 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