用DIV+CSS写小三角

<！DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>test</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <style> /*test*/ *{ margin:0; padding:0; font-size:12px; font-family:Verdana, Arial; line-height:1.8; list-style:none;} #info,#nav{ margin:50px; border:1px dashed #f30; background:#ffc; padding:50px;} #info div{background:#f00; width:0px; height:0px; overflow:hidden; margin-bottom:10px;} /*测试*/ #com_a{ border-top:10px solid #ffc;border-left:10px solid #f30;border-bottom:10px solid #ffc;} #com_b{ border-top:10px solid #ffc;border-right:10px solid #f30;border-bottom:10px solid #ffc;} #com_c{ border-top:10px solid #ffc;border-right:10px solid #f30;border-bottom:10px solid #ffc;border-left:10px solid #f30;} #com_d{ border-top:10px solid #f30;border-right:10px solid #ffc;border-bottom:10px solid #f30;border-left:10px solid #ffc;} #com_e{ border-top:10px solid #ffc;border-left:10px solid #f30;} #com_f{ border-top:10px solid #f30;border-right:10px solid #ffc;border-left:10px solid #ffc;} #com_g{ border-right:10px solid #ffc;border-bottom:10px solid #f30;border-left:10px solid #ffc;} #com_h{ border-top:10px solid #f30;border-bottom:10px solid #f30;border-left:10px solid #ffc;} #com_i{ border-top:10px solid #f30;border-right:10px solid #f30;border-bottom:10px solid #f30;border-left:10px solid #ffc;} </style> </head> <body><h1>测试</h1> </body> </html>

[Ctrl+A 全选注:如需引入外部Js需刷新才能执行]