/**组件样式*/
.bg_blue{}
.bg_blue li{
    float: left;
    width: 27%;
    height: 190px;
    padding: 7px 9px;
    border: 1px solid #b5e1f4;
    background-color: #d5f1f3;
    margin: 20px 40px;}
.bg_blue li:nth-child(3n){
    margin-right:0;}
.bg_blue li a{}
.bg_blue li a img{
    width: 100%;
    height: 100%;}