\u9875\u9762design\u4e2d\uff0c\u7528CSS\u63a7\u5236\u5e03\u5c40\u65f6float\u4e0eclear\u5c5e\u6027\u7684\u8fd0\u7528\u81f3\u5173\u91cd\u8981\uff0c\u4e00\u5b9a\u8981\u7406\u89e3\u6e05\u695a\u3002\u4e0b\u9762\u7528\u6211\u81ea\u5df1\u6478\u7d22\u548c\u7f51\u7edc\u4e0a\u6574\u7406\u7684\u5185\u5bb9\u52a0\u4ee5\u603b\u7ed3\u3002
\n\u7b2c\u4e00\uff0c\u5fc5\u987b\u8981\u660e\u767d\u4e24\u4ef6\u4e8b\uff1a
\n1 .\u6d4f\u89c8\u5668\u4e8b\u6309\u7167HTML\u4ee3\u7801\u4e2d\u5bf9\u8c61\u58f0\u660e\u7684\u5148\u540e\u987a\u5e8f,\u4ee5\u6d41\u5e03\u5c40\u7684\u65b9\u5f0f\u6765\u663e\u793a\u5bf9\u8c61\u7684.
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\n\u5148\u770b\u4e0b\u9762\u793a\u4f8b\u3002\u4ee3\u7801\uff1a<\/p>\n
\r\n<!DOCTYPE HTML PUBLIC "-\/\/W3C\/\/DTD HTML 4.0 Transitional\/\/EN">\r\n<HTML>\r\n\r\n<HEAD>\r\n<style>\r\n.left\r\n{\r\n background-color:#cccccc;\r\n border:2px solid #333333;\r\n width:200px;\r\n height:100px;\r\n}\r\n.leftfloat\r\n{\r\n background-color:#cccccc;\r\n border:2px solid #333333;\r\n width:200px;\r\n height:100px;\r\n float:left;\r\n}\r\n.right\r\n{\r\n background-color:#cccccc;\r\n border:2px solid #333333;\r\n height:100px;\r\n}\r\n<\/style>\r\n<\/HEAD>\r\n\r\n<BODY>\r\n<div class="left">div left float:none<\/div>\r\n<div class="right">div right<\/div>\r\n\r\n<div class="leftfloat">div left float:left<\/div>\r\n<div class="right">div right<\/div>\r\n\r\n<span class="left">span left float:none<\/span>\r\n<span class="right">span right<\/span>\r\n<\/BODY>\r\n<\/HTML>\r\n<\/pre>\n\u4ece\u4e2d\u53ef\u4ee5\u770b\u51fa\uff1a\u5355\u72ec\u7684block\u5143\u7d20\u72ec\u5360\u4e00\u884c\uff0c\u4f8b\u5982\u7b2c\u4e00\u4e2adiv\u548c\u7b2c\u4e8c\u4e2adiv\uff0c\u800c\u5728\u4f7f\u7528float\u4e4b\u540e\uff0c\u4e24\u4e2adiv\u663e\u793a\u5728\u540c\u4e00\u884c.\u4f46\u662fspan\u5219\u4e0d\u7136\uff0c\u5373\u4f7f\u4e0d\u4f7f\u7528float\uff0c\u8ba9\u7136\u5728\u540c\u4e00\u884c\u663e\u793a\u3002
\n\u800cclear\u5728\u4ec0\u4e48\u65f6\u5019\u7528\u5462\uff1f
\n\u5f53\u5c5e\u6027\u8bbe\u7f6efloat\uff08\u6d6e\u52a8\uff09\u65f6\uff0c\u5b83\u6240\u5728\u7684\u7269\u7406\u4f4d\u7f6e\u5df2\u7ecf\u8131\u79bb\u6587\u6863\u6d41\u4e86\uff0c\u4f46\u662f\u5927\u591a\u65f6\u5019\u6211\u4eec\u5e0c\u671b\u6587\u6863\u6d41\u80fd\u8bc6\u522bfloat\uff08\u6d6e\u52a8\uff09,\u6216\u8005\u662f\u5e0c\u671bfloat\uff08\u6d6e\u52a8\uff09\u540e\u9762\u7684\u5143\u7d20\u4e0d\u88abfloat\uff08\u6d6e\u52a8\uff09\u6240\u5f71\u54cd\uff0c\u8fd9\u4e2a\u65f6\u5019\u6211\u4eec\u5c31\u9700\u8981\u7528clear:both;\u6765\u6e05\u9664clear:both;
\n\u4f8b\u5b50\uff1a<\/p>\n
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\r\n<p style="float:left;width :100px;">\u8fd9\u4e2a\u662f\u7b2c1\u5217\uff0c<\/p>\r\n<p style="float:left;width :400px;">\u8fd9\u4e2a\u662f\u7b2c2\u5217\uff0c<\/p>\r\n<p style="clear:both;">\u8fd9\u4e2a\u662f\u5217\u7684\u4e0b\u9762\u3002<\/p>\r\n<\/pre>\n\u7528CSS\u7684float\u548cclear\u521b\u5efa\u4e09\u680f\u6db2\u6001\u5e03\u5c40\u7684\u65b9\u6cd5\u4e09\u680f\u5e03\u5c40\u662f\u76ee\u524d\u6700\u5e38\u89c1\u7684\u7f51\u9875\u5e03\u5c40\uff0c\u4e3b\u8981\u9875\u5185\u5bb9\u653e\u5728\u4e2d\u95f4\u4e00\u680f\uff0c\u8fb9\u4e0a\u7684\u4e24\u680f\u653e\u7f6e\u5bfc\u822a\u94fe\u63a5\u4e4b\u7c7b\u7684\u5185\u5bb9\u3002\u57fa\u672c\u5e03\u5c40\u4e00\u822c\u662f\u6807\u9898\u4e4b\u4e0b\u653e\u7f6e\u4e09\u680f\uff0c\u4e09\u680f\u5360\u636e\u6574\u4e2a\u9875\u9762\u7684\u5bbd\u5ea6\uff0c\u6700\u540e\u5728\u9875\u7684\u5e95\u7aef\u653e\u7f6e\u9875\u811a\uff0c\u9875\u811a\u4e5f\u5360\u636e\u6574\u4e2a\u9875\u9762\u5bbd\u5ea6\u3002<\/p>\n
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\u57fa\u672c\u65b9\u6cd5<\/p>\n
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\u4e09\u680f\u5e03\u5c40\u7684\u4e00\u4e2a\u4f8b\u5b50<\/p>\n
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\r\n<body>\r\n<div id="header">\r\n <h1>Header<\/h1>\r\n<\/div>\r\n<div id="left">\r\n Port side text\u2026\r\n<\/div>\r\n<div id="right">\r\n Starboard side text\u2026\r\n<\/div>\r\n<div id="middle">\r\n Middle column text\u2026\r\n<\/div>\r\n<div id="footer">\r\n Footer text\u2026\r\n<\/div>\r\n<\/body>\r\n<\/pre>\n\u4e0b\u9762\u662fCSS\u4ee3\u7801\uff1a<\/p>\n
\r\nbody {\r\n margin: 0px;\r\n padding: 0px;\r\n}\r\ndiv#header {\r\n clear: both;\r\n height: 50px;\r\n background-color: aqua;\r\n padding: 1px;\r\n}\r\ndiv#left {\r\n float: left;\r\n width: 150px;\r\n background-color: red;\r\n}\r\ndiv#right {\r\n float: right;\r\n width: 150px;\r\n background-color: green;\r\n}\r\ndiv#middle {\r\n padding: 0px 160px 5px 160px;\r\n margin: 0px;\r\n background-color: silver;\r\n}\r\ndiv#footer {\r\n clear: both;\r\n background-color: yellow;\r\n}\r\n<\/pre>\n\u4ee3\u7801\u8bf4\u660e<\/p>\n
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