css自适应宽度 正方形布局 九宫格

*{

margin:0; padding:0;

}

ul{

text-decoration:none;

list-style-type:none;

}

.video_list>li{

float:left;

width:32%;

text-align:center;

border:1px solid#ccc;

padding-top:31%;

margin-left:1%;

margin-top:1%;

position:relative;

}

.video_list>li>div{

position:absolute;

left:0;

top:0;

width:100%;

height:100%;

background-color:#09BE07;

}

.video_list>li>div>span{

display:inline-block;

margin-top:50%;

-webkit-transform:translateY(-50%);

transform:translateY(-50%);

}

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