用#div1 还是div? 绝对定位这边有什么区别
#div1{ width:200px; height:200px; border:2px red solid; position:absolute; right:100px; top:20px; }这边这样 和上图区别?
#div1{ width:200px; height:200px; border:2px red solid; position:absolute; right:100px; top:20px; }这边这样 和上图区别?
2016-05-13
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