div+css 画三角形
<style type="text/css"> .rightdirection { width:0;height:0; line-height:0; border-width:20px; border-style:solid; border-color:transparent transparent transparent #A9DBF6; } .bottomdirection { width:0;height:0; line-height:0; border-width:20px; border-style:solid; border-color: #A9DBF6 transparent transparent transparent; } .leftdirection { width:0;height:0; line-height:0; border-width:20px; border-style:solid; border-color: transparent #A9DBF6 transparent transparent; } .topdirection { width:0;height:0; line-height:0; border-width:20px; border-style:solid; border-color: transparent transparent #A9DBF6 transparent; } .topdirection1 { width:0;height:0; line-height:0; border-width:20px; border-style:solid; border-color: #A9DBF6 transparent transparent #A9DBF6 ; } </style> <div class="rightdirection"></div> <p> <div class="bottomdirection"></div> <p> <div class="leftdirection"></div> <p> <div class="topdirection"></div> <br/><br/><br/><br/> <div class="topdirection1"></div>
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