秋刀鱼设计

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.bb1{width:500px;border:1px solid #333;padding:10px;margin:20px auto;}
.bb2{float:left;position:relative;left:50%;}
.bb2 a{position:relative;right:50%;}

.bb1{width:500px;border:1px solid #333;padding:10px;margin:20px auto;} .bb2{float:left;position:relative;left:50%;} .bb2 a{position:relative;right:50%;}