.zxzhishi .item{width: 11.111%;float: left;margin: 10px 0; text-align:center;}
.zxzhishi .item a{width:75px;height:75px; padding:15px; border-radius: 50%;border: solid 1px #ddd; position:relative;display: table-cell;vertical-align: middle;text-align: center;}
.zxzhishi:after{ content:""; display:block; clear:both;}