left div, .right div {}这种写法是什么意思?
.left div,
.right div {
width: 100%;
height: 50px;
padding: 5px;
margin: 5px;
float: left;
border: 1px solid #ccc;
}
.left div,
.right div {
width: 100%;
height: 50px;
padding: 5px;
margin: 5px;
float: left;
border: 1px solid #ccc;
}
2016-08-30
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