为什么要加relative?
.topmenu li:hover span
{
background: white;
display: inline-block;
z-index: 20;
width: 20px;
height: 30px;
float: right;
position: relative;
}
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.topmenu li:hover span
{
background: white;
display: inline-block;
z-index: 20;
width: 20px;
height: 30px;
float: right;
position: relative;
}
2015-06-28
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