{"id":32301,"date":"2024-11-25T12:38:32","date_gmt":"2024-11-25T04:38:32","guid":{"rendered":"https:\/\/fwq.ai\/blog\/32301\/"},"modified":"2024-11-25T12:38:32","modified_gmt":"2024-11-25T04:38:32","slug":"%e4%bd%bf%e7%94%a8css3%e5%88%9b%e5%bb%ba%e4%b8%80%e4%b8%aa%e9%85%b7%e7%82%ab%e7%9a%84%e5%8a%a8%e7%94%bb%e5%af%bc%e8%88%aa","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/32301\/","title":{"rendered":"\u4f7f\u7528CSS3\u521b\u5efa\u4e00\u4e2a\u9177\u70ab\u7684\u52a8\u753b\u5bfc\u822a"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/000\/887\/227\/169309902918087.jpg\" class=\"aligncenter\" title=\"\u4f7f\u7528CSS3\u521b\u5efa\u4e00\u4e2a\u9177\u70ab\u7684\u52a8\u753b\u5bfc\u822a\u63d2\u56fe\" alt=\"\u4f7f\u7528CSS3\u521b\u5efa\u4e00\u4e2a\u9177\u70ab\u7684\u52a8\u753b\u5bfc\u822a\u63d2\u56fe\" \/><\/p>\n<p>\u5728\u8fc7\u53bb\u7684 Web \u5f00\u53d1\u65f6\u4ee3\uff0c\u5f00\u53d1\u4eba\u5458\u5728\u9700\u8981\u4e3a\u5176\u7f51\u7ad9\u5236\u4f5c\u4efb\u4f55\u7c7b\u578b\u7684\u52a8\u753b\u65f6\u90fd\u4f1a\u4f9d\u8d56 Adob\u200b\u200be \u7684 Flash\u3002\u968f\u7740\u65f6\u95f4\u7684\u63a8\u79fb\uff0c\u4eba\u4eec\u653e\u5f03\u4e86 Flash\uff0c\u5f00\u59cb\u501f\u52a9 CSS \u548c JavaScript \u6765\u5b8c\u6210\u8bb8\u591a\u8fd9\u6837\u7684\u4e8b\u60c5\u3002\u6700\u540e\uff0c\u501f\u52a9 CSS3 \u53ca\u5176\u73b0\u5728\u6240\u4eab\u6709\u7684\u5e7f\u6cdb\u6d4f\u89c8\u5668\u652f\u6301\uff0c\u6211\u4eec\u53ea\u9700\u4f7f\u7528\u4e00\u4e9b CSS3 \u800c\u65e0\u9700\u5176\u4ed6\u4efb\u4f55\u4e1c\u897f\uff0c\u5c31\u53ef\u4ee5\u505a\u4e00\u4e9b\u975e\u5e38\u4ee4\u4eba\u60ca\u5947\u7684\u4e8b\u60c5\u3002<\/p>\n<p>\u5728\u672c\u6559\u7a0b\u4e2d\uff0c\u6211\u5c06\u5411\u60a8\u5c55\u793a\u5982\u4f55\u4f7f\u7528 CSS3 \u521b\u5efa\u4e00\u4e2a\u5f88\u9177\u7684\u52a8\u753b\u5bfc\u822a\u83dc\u5355\u3002\u60a8\u53ef\u4ee5\u5728\u4e0b\u9762\u7684 CodePen \u6f14\u793a\u4e2d\u770b\u5230\u5b83\u7684\u5b9e\u9645\u6548\u679c\uff1a<\/p>\n<\/p>\n<p>\u5bf9\u5b9e\u65bd\u83dc\u5355\u611f\u5230\u5174\u594b\u5417\uff1f\u8ba9\u6211\u4eec\u5f00\u59cb\u5427\u3002<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<h2>\u51b3\u5b9a\u6807\u8bb0<\/h2>\n<p>HTML5 \u5f15\u5165\u4e86\u8bb8\u591a\u65b0\u6807\u7b7e\u548c\u529f\u80fd\u3002\u8fd9\u610f\u5473\u7740\u6211\u4eec\u4e0d\u518d\u9700\u8981\u4f7f\u7528 div \u5143\u7d20\u6765\u5305\u88c5\u6211\u4eec\u60f3\u8981\u8bbe\u7f6e\u6837\u5f0f\u7684\u6240\u6709\u5185\u5bb9\u3002\u6211\u4eec\u7684\u6807\u8bb0\u73b0\u5728\u53ef\u4ee5\u66f4\u52a0\u660e\u667a\u548c\u8bed\u4e49\u5316\u3002<\/p>\n<p>\u8ba9\u6211\u4eec\u4ece\u7f51\u7ad9\u7684\u6807\u9898\u90e8\u5206\u5f00\u59cb\u3002\u6211\u4eec\u5c06\u5176\u5305\u88c5\u5728 header \u5143\u7d20\u5185\uff0c\u5982\u4e0b\u6240\u793a\u3002<\/p>\n<pre>&lt;header&gt;&lt;div class=\"top-wrapper\"&gt;\n  &lt;\/div&gt;\n  \n  &lt;nav&gt;&lt;ul&gt;\n&lt;li&gt;&lt;a href=\"#\"&gt;home&lt;\/a&gt;&lt;\/li&gt;\n      &lt;li&gt;&lt;a href=\"#\"&gt;about&lt;\/a&gt;&lt;\/li&gt;\n      &lt;li&gt;&lt;a href=\"#\"&gt;services&lt;\/a&gt;&lt;\/li&gt;\n      &lt;li&gt;&lt;a href=\"#\"&gt;solutions&lt;\/a&gt;&lt;\/li&gt;\n      &lt;li&gt;&lt;a href=\"#\"&gt;contact&lt;\/a&gt;&lt;\/li&gt;\n    &lt;\/ul&gt;&lt;\/nav&gt;&lt;\/header&gt;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u6807\u5934\u5143\u7d20\u5305\u542b\u4e00\u4e2a\u7a7a\u7684 div \uff0c\u5b83\u4ec5\u5145\u5f53\u7a7a\u683c\u586b\u5145\u7b26\u3002\u4e4b\u540e\uff0c\u6211\u4eec\u6709\u4e00\u4e2a nav \u5143\u7d20\uff0c\u5176\u4e2d\u5305\u542b\u6211\u4eec\u7684\u4e3b\u5bfc\u822a\u3002\u5bfc\u822a\u94fe\u63a5\u57fa\u672c\u4e0a\u662f\u65e0\u5e8f\u5217\u8868\u7684\u4e00\u90e8\u5206\uff0c\u6211\u4eec\u7a0d\u540e\u5c06\u5bf9\u5176\u8fdb\u884c\u6837\u5f0f\u8bbe\u7f6e\u3002<\/p>\n<p>\u73b0\u5728\uff0c\u6211\u4eec\u5c06\u4e3a\u7f51\u9875\u7684\u4e3b\u8981\u5185\u5bb9\u7f16\u5199\u4e00\u4e9b\u6807\u8bb0\u3002\u6211\u4eec\u5c06\u5728\u8fd9\u91cc\u4f7f\u7528 section \u548c article \u6807\u7b7e\u3002<\/p>\n<pre>&lt;article class=\"main-content\"&gt;&lt;section&gt;&lt;h2&gt;What is Lorem Ipsum?&lt;\/h2&gt;\n    &lt;p&gt;Lorem ipsum dolor sit amet, consectetur adipiscing elit. Phasellus gravida felis et fringilla aliquam. Phasellus erat lorem, efficitur sed facilisis non, scelerisque a metus. Nam sit amet fermentum felis, vitae ultrices purus. Ut dui ligula, sagittis ut blandit ac, interdum ut urna.&lt;\/p&gt;\n    &lt;p&gt;Cras quis magna sit amet dui ultrices elementum. Suspendisse laoreet sem nisi, pretium vestibulum sapien commodo cursus. Sed et gravida tellus. Suspendisse nec dapibus mi, quis dignissim massa. Sed sit amet velit scelerisque, tristique ipsum in, tristique orci.&lt;\/p&gt;\n    &lt;p&gt;Aliquam dictum pretium orci, at molestie augue euismod non. Nam ac lobortis mauris, eu ultrices leo. Etiam facilisis arcu non libero molestie, eget vestibulum urna rhoncus. &lt;\/p&gt;\n  &lt;\/section&gt;&lt;\/article&gt;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>article \u6807\u7b7e\u5305\u542b\u7f51\u9875\u7684\u4e3b\u8981\u5185\u5bb9\uff0c\u5373\u535a\u5ba2\u6587\u7ae0\uff0c\u800c section \u6807\u7b7e\u5305\u542b\u535a\u5ba2\u6587\u7ae0\u7684\u4e0d\u540c\u90e8\u5206\u3002<\/p>\n<h2>\u8bbe\u7f6e\u6807\u9898\u6837\u5f0f<\/h2>\n<p>\u6b63\u5982\u6211\u4e4b\u524d\u63d0\u5230\u7684\uff0c\u6211\u4eec\u7f51\u9875\u7684 header \u5c06\u5728\u9876\u90e8\u5305\u542b\u4e00\u4e2a\u7a7a\u683c\u586b\u5145\u7b26 div \u5143\u7d20\u3002\u7531\u4e8e\u5728\u6211\u4eec\u7684\u793a\u4f8b\u4e2d\u8fd9\u5c06\u662f\u7a7a\u767d\u533a\u57df\uff0c\u56e0\u6b64\u6211\u4eec\u5c06\u4e3a\u5176\u6307\u5b9a 150px \u7684\u9ad8\u5ea6\u3002\u4ee5\u4e0b\u662f\u5e94\u7528\u4e8e div \u5143\u7d20\u7684\u6240\u6709 CSS\u3002<\/p>\n<pre>div.top-wrapper {\n  height: 150px;\n  background: linear-gradient(black, #616161);\n  padding: 20px;\n  position: relative;\n  z-index: 999;\n  box-shadow: 0 2px 5px black;\n}\n<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u6211\u4eec\u5e0c\u671b div \u5143\u7d20\u90e8\u5206\u653e\u7f6e\u5728\u5bfc\u822a\u94fe\u63a5\u4e0a\u3002\u8fd9\u5c31\u662f\u4e3a\u4ec0\u4e48\u6211\u4eec\u5e94\u7528\u4e86 999 \u7684 z-index \u3002\u4f46\u662f\uff0c\u6b64\u5c5e\u6027\u4e0d\u9002\u7528\u4e8e\u9759\u6001\u5b9a\u4f4d\u7684\u5143\u7d20\uff0c\u56e0\u6b64\u6211\u4eec\u9700\u8981\u5c06 position \u66f4\u6539\u4e3a relative\u3002 box-shadow \u5c5e\u6027\u4e3a\u6211\u4eec\u63d0\u4f9b\u4e86\u5fae\u5999\u7684 3D \u6548\u679c\uff0c\u586b\u5145\u7b26 div \u5b9e\u9645\u4e0a\u4f4d\u4e8e\u6211\u4eec\u7684\u5bfc\u822a\u83dc\u5355\u4e0a\u65b9\u3002<\/p>\n<p>\u6211\u4eec\u8fd8\u53ef\u4ee5\u5bf9 body \u5143\u7d20\u5e94\u7528\u91cd\u590d\u7684\u7ebf\u6027\u6e10\u53d8\uff0c\u4ee5\u4f7f\u80cc\u666f\u66f4\u6709\u8da3\u3002<\/p>\n<pre>body {\n  background: repeating-linear-gradient(\n    45deg,\n    #424242 0px,\n    #424242 5px,\n    #6e6e6e 5px,\n    #6e6e6e 7px\n  );\n}\n<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<h2>\u8bbe\u7f6e\u5bfc\u822a\u83dc\u5355\u7684\u6837\u5f0f<\/h2>\n<p>\u5bfc\u822a\u83dc\u5355\u4e2d\u7684\u94fe\u63a5\u9700\u8981\u6c34\u5e73\u5e76\u6392\u653e\u7f6e\uff0c\u5e76\u4e14\u5b83\u4eec\u4e4b\u95f4\u7684\u95f4\u8ddd\u5747\u5300\u3002\u6709\u591a\u79cd\u65b9\u6cd5\u53ef\u4ee5\u5b9e\u73b0\u8fd9\u4e00\u70b9\uff0c\u4f46\u6211\u4eec\u5c06\u4f7f\u7528 Flexbox\uff0c\u56e0\u4e3a\u5bf9\u4e8e\u8fd9\u79cd\u7279\u6b8a\u60c5\u51b5\uff0c\u5b83\u662f\u6700\u7b80\u5355\u4e14\u6700\u6709\u6548\u7684\u65b9\u6cd5\u3002<\/p>\n<p>\u4ee5\u4e0b\u662f\u6211\u4eec\u5c06\u5e94\u7528\u4e8e\u65e0\u5e8f\u5217\u8868\u3001\u65e0\u5e8f\u5217\u8868\u5143\u7d20\u548c\u65e0\u5e8f\u5217\u8868\u5143\u7d20\u94fe\u63a5\u7684 CSS\uff1a<\/p>\n<pre>nav ul {\n  margin-left: 20px;\n  list-style: none;\n  display: flex;\n  gap: 0.1rem;\n}\n\nnav ul li {\n  background: black;\n  padding: 1.5rem 1rem 0.5rem 1rem;\n  position: relative;\n  border-radius: 0 0 10px 10px;\n  top: -1.25rem;\n  transition: 0.2s all;\n  text-transform: uppercase;\n}\n\nnav ul li a {\n  color: white;\n  text-decoration: none;\n}\n<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u5c06\u65e0\u5e8f\u5217\u8868\u7684 display \u8bbe\u7f6e\u4e3a flex \u4f1a\u5c06\u6240\u6709\u5217\u8868\u5143\u7d20\u5e76\u6392\u653e\u7f6e\uff0c\u5e76\u5c06 gap \u5c5e\u6027\u7684\u503c\u8bbe\u7f6e\u4e3a <strong>0.1rem<\/strong> \u4f1a\u5728\u5b83\u4eec\u4e4b\u95f4\u5f15\u5165\u989d\u5916\u7684\u95f4\u8ddd.<\/p>\n<p>\u6211\u4eec\u8fd8\u5bf9\u5217\u8868\u5143\u7d20\u5e94\u7528\u4e86\u4e0d\u5747\u5300\u7684\u586b\u5145\u3002\u60a8\u53ef\u4ee5\u770b\u5230\u9876\u90e8\u5185\u8fb9\u8ddd\u8bbe\u7f6e\u4e3a<strong>1.5rem<\/strong>\uff0c\u800c\u5e95\u90e8\u5185\u8fb9\u8ddd\u4ec5\u4e3a<strong>0.5rem<\/strong>\u3002\u6211\u4eec\u6b63\u5728\u8865\u507f\u5206\u914d\u7ed9 top \u5c5e\u6027\u7684\u504f\u79fb\u503c\u3002\u6211\u4eec\u8fd8\u5e0c\u671b\u5e95\u90e8\u662f\u5706\u89d2\u7684\uff0c\u56e0\u6b64\u6211\u4eec\u5c06 <strong>10px<\/strong> \u7684 border-radius \u5e94\u7528\u4e8e\u53f3\u4e0b\u89d2\u548c\u5de6\u4e0b\u89d2\u3002<\/p>\n<p>\u4e3a\u4ec0\u4e48\u6211\u4eec\u8981\u504f\u79fb\u5217\u8868\u5143\u7d20\u7684<strong>\u9876\u90e8<\/strong>\u4f4d\u7f6e\uff1f\u8fd9\u662f\u56e0\u4e3a\u6211\u4eec\u5c06\u5728\u60ac\u505c\u65f6\u5c06\u5b83\u4eec\u52a8\u753b\u5230\u8f83\u4f4e\u7684\u4f4d\u7f6e\u3002 transition \u5c5e\u6027\u5e2e\u52a9\u6211\u4eec\u4f7f\u52a8\u753b\u5e73\u6ed1\u800c\u4e0d\u662f\u7a81\u7136\u3002<\/p>\n<p>\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u5217\u8868\u5143\u7d20\u5185\u7684\u94fe\u63a5\u5c06\u5177\u6709\u6d45\u84dd\u8272\u548c\u4e0b\u5212\u7ebf\u3002\u6211\u4eec\u901a\u8fc7\u5c06 color \u8bbe\u7f6e\u4e3a <strong>white<\/strong> \u5e76\u5c06 text-decoration \u8bbe\u7f6e\u4e3a <strong>none<\/strong> \u6765\u6446\u8131\u5b83\u4eec\u3002<\/p>\n<p>\u6700\u540e\uff0c\u6211\u4eec\u5c06\u4f7f\u7528\u4ee5\u4e0b CSS \u4f7f\u83dc\u5355\u66f4\u52a0\u4e30\u5bcc\u591a\u5f69\uff1a<\/p>\n<pre>nav ul li:nth-child(1) {\n  background: #ff9800;\n}\n\nnav ul li:nth-child(2) {\n  background: #c2185b;\n}\n\nnav ul li:nth-child(3) {\n  background: #1e88e5;\n}\n\nnav ul li:nth-child(4) {\n  background: #7cb342;\n}\n\nnav ul li:nth-child(5) {\n  background: #546e7a;\n}\n<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u5982\u60a8\u6240\u89c1\uff0c\u6211\u4eec\u4e0d\u5fc5\u4e3a\u6bcf\u4e2a\u5bfc\u822a\u83dc\u5355\u94fe\u63a5\u5206\u914d\u5355\u72ec\u7684\u7c7b\u3002\u6211\u4eec\u53ea\u9700\u4f7f\u7528 <strong>nth-child<\/strong> \u9009\u62e9\u5668\u5373\u53ef\u5355\u72ec\u8bbe\u7f6e\u5b83\u4eec\u7684\u6837\u5f0f\u3002\u8fd9\u662f\u6211\u4eec\u76ee\u524d\u6240\u62e5\u6709\u7684\uff1a<\/p>\n<\/p>\n<h2>\u8bbe\u7f6e\u6587\u7ae0\u5185\u5bb9\u7684\u6837\u5f0f<\/h2>\n<p>\u6211\u4eec\u7684\u5bfc\u822a\u83dc\u5355\u73b0\u5728\u770b\u8d77\u6765\u6b63\u662f\u6211\u4eec\u60f3\u8981\u7684\u3002\u7136\u800c\uff0c\u4e3b\u8981\u6587\u7ae0\u5185\u5bb9\u51e0\u4e4e\u770b\u4e0d\u89c1\u3002\u73b0\u5728\u6211\u4eec\u6765\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u3002\u4e3a\u4e86\u63d0\u9ad8\u5185\u5bb9\u7684\u53ef\u89c1\u6027\u548c\u5916\u89c2\uff0c\u6211\u4eec\u9700\u8981\u505a\u7684\u5c31\u662f\u5e94\u7528\u4ee5\u4e0b CSS\uff1a<\/p>\n<pre>article.main-content, nav {\n  width: 90%;\n  margin: 0px auto;\n}\n\nsection {\n  background: white;\n  padding: 2rem;\n  border-radius: 0.5rem;\n  position: relative;\n  z-index: 999;\n  top: -0.5rem;\n}\n\np {\n  line-height: 1.5;\n  margin: 1rem 0;\n}\n<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u5c06\u76f8\u540c\u7684 width \u548c margin \u5e94\u7528\u4e8e\u6211\u4eec\u7684\u6587\u7ae0\uff0c\u5bfc\u822a\u5c06\u5b83\u4eec\u6b63\u786e\u5bf9\u9f50\u3002\u8fd8\u8bb0\u5f97\u6211\u4eec\u4e4b\u524d\u4e3a\u65e0\u5e8f\u5217\u8868\u5206\u914d\u4e86 <strong>20px<\/strong> \u7684 margin-left \u5417\uff1f\u8fd9\u5c06\u4f7f\u6211\u4eec\u7684\u5bfc\u822a\u83dc\u5355\u7a0d\u5fae\u4f4d\u4e8e\u6587\u7ae0\u5de6\u8fb9\u7f18\u7684\u53f3\u4fa7\u3002<\/p>\n<p>\u6b64\u5904\u7684 z-index 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<strong>1.5rem<\/strong>\u3002\u9876\u90e8\u548c\u5e95\u90e8\u586b\u5145\u503c\u57fa\u672c\u4e0a\u98a0\u5012\u4e86\uff0c\u56e0\u4e3a\u5bfc\u822a\u83dc\u5355\u94fe\u63a5\u73b0\u5728\u5c06\u5728\u5e95\u90e8\u800c\u4e0d\u662f\u9876\u90e8\u88ab\u5207\u65ad\u3002<\/p>\n<p>\u6211\u4eec\u8bbe\u7f6e\u52a8\u753b\u7684\u7b2c\u4e09\u4e2a\u5c5e\u6027\u662f border-radius\uff0c\u5de6\u4e0a\u89d2\u548c\u53f3\u4e0a\u89d2\u53d8\u4e3a <strong>10px<\/strong>\u3002\u5de6\u4e0b\u89d2\u548c\u53f3\u4e0b\u89d2\u53d8\u4e3a 0\u3002<\/p>\n<p>\u4ee5\u4e0b\u662f\u6bcf\u5f53\u7528\u6237\u5c06\u9f20\u6807\u60ac\u505c\u5728\u83dc\u5355\u9879\u4e0a\u65f6\u5e94\u7528\u8fd9\u4e9b\u66f4\u6539\u7684 CSS\uff1a<\/p>\n<pre>nav ul li:hover {\n  top: 20px;\n  padding: 0.5rem 1rem 1.5rem 1rem;\n  border-radius: 10px 10px 0 0;\n}\n<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u6240\u6709\u8fd9\u4e9b\u52a8\u753b\u90fd\u5728<strong>0.2s<\/strong>\u5185\u53d1\u751f\uff0c\u56e0\u4e3a\u8fd9\u662f\u6211\u4eec\u4e4b\u524d\u5206\u914d\u7ed9 transition \u5c5e\u6027\u7684\u6301\u7eed\u65f6\u95f4\u3002<\/p>\n<\/p>\n<h2>\u4e3a\u4f2a\u5143\u7d20\u8bbe\u7f6e\u52a8\u753b<\/h2>\n<p>\u73b0\u5728\u6211\u4eec\u552f\u4e00\u8981\u505a\u7684\u5c31\u662f\u5bfc\u822a\u94fe\u63a5\u9876\u90e8\u7684\u767d\u6846\u7684\u521b\u5efa\u548c\u52a8\u753b\u3002\u6211\u4eec\u501f\u52a9\u4f2a\u5143\u7d20\u6765\u5b9e\u73b0\u8fd9\u4e00\u70b9\u3002\u6211\u4eec\u4f7f\u7528 ::after \u4f2a\u7c7b\u6765\u521b\u5efa\u4f2a\u5143\u7d20\u3002\u8fd9\u4e2a\u4f2a\u5143\u7d20\u6210\u4e3a\u6211\u4eec\u539f\u59cb\u9009\u62e9\u5668\u7684\u6700\u540e\u4e00\u4e2a\u5b50\u5143\u7d20\u3002 <\/p>\n<p>\u8fd9\u662f\u6211\u4eec\u7528\u6765\u521b\u5efa\u4f2a\u5143\u7d20\u7684 CSS\uff1a<\/p>\n<pre>nav ul li::after {\n  content: \"\";\n  position: absolute;\n  width: 100%;\n  height: 20px;\n  background: white;\n  top: -30px;\n  left: 0;\n  border-radius: 0 0 10px 10px;\n}\n<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4e3a content \u5c5e\u6027\u63d0\u4f9b\u4e00\u4e2a\u503c\u5f88\u91cd\u8981\uff0c\u5373\u4f7f\u8be5\u503c\u662f\u7a7a\u5b57\u7b26\u4e32\u3002\u6211\u4eec\u5c06 position \u8bbe\u7f6e\u4e3a absolute \u4ee5\u5c06\u8be5\u5143\u7d20\u4ece\u6b63\u5e38\u6587\u6863\u6d41\u4e2d\u53d6\u51fa\u5e76\u6309\u7167\u6211\u4eec\u60f3\u8981\u7684\u65b9\u5f0f\u5b9a\u4f4d\u3002 100% \u7684\u5bbd\u5ea6\u53ef\u786e\u4fdd\u6240\u6709\u4f2a\u5143\u7d20\u4e0e\u5176\u5404\u81ea\u5bfc\u822a\u94fe\u63a5\u7684 width \u76f8\u5339\u914d\u3002<\/p>\n<p>\u6700\u7ec8\u7ed3\u679c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<\/p>\n<h2>\u6700\u7ec8\u60f3\u6cd5<\/h2>\n<p>\u5728\u672c\u6559\u7a0b\u4e2d\uff0c\u6211\u4eec\u4ec5\u4f7f\u7528\u4e00\u4e9b CSS3 \u5c5e\u6027\u521b\u5efa\u4e86\u4e00\u4e2a\u5f88\u9177\u7684\u52a8\u753b\u5bfc\u822a\u83dc\u5355\uff0c\u800c\u65e0\u9700\u7f16\u5199\u4efb\u4f55 JavaScript 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