CSS输出图形 <br /> .square{width:100px;height:100px;background-color:#FFF;position:relative;border:2px #000000 solid;}<br />.square:before{<br />content:"";<br />width:0px;<br />height:0px;<br />display:block;<br />position:absolute;<br />z-index:2;<br />top:25%;<br />right:-28px;<br />border:15px solid #FFF;<br />border-color:transparent transparent transparent #FFF;<br />}<br />.square:after{content:"";<br />width:0px;<br />height:0px;<br />display:block;<br />position:absolute;<br />z-index:1;<br />top:25%;<br />right:-30px;<br />border:15px solid #FFF;<br />border-color:transparent transparent transparent #000;<br />} <br />.a{width:0;height:0;border:40px solid; border-color:transparent transparent transparent #F00;}<br />
