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1 <!doctype html> 2 <html> 3 <head> 4 <meta charset="UTF-8"> 5 <title>韬睿科技</title> 6 <style> 7 .div1{ 8 width: 375px; 9 height: 230px; 10 border: 1px solid red; 11 padding:15px; 12 border-radius:8px; 13 position:absolute; 14 left:5px; 15 top:8px; 16 17 } 18 .div2{ 19 transform:rotate(45deg); 20 background:none repeat 0 0 white; 21 border-top:1px solid red; 22 border-left:1px solid red; 23 width:10px; 24 height:10px; 25 left:33px; 26 top:-6px; 27 position:absolute; 28 } 29 </style> 30 </head> 31 <body> 32 <div class="div1"> 33 <div class="div2"> 34 </div> 35 </div> 36 </body> 37 </html>
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原文地址：http://www.cnblogs.com/xiaomume/p/4685410.html
