*{

    margin:0;

    padding:0;

}

.topList{

    width:300px;

    height:180px;

    border:1px solid #E8E8E8;

    margin:30px auto;

}

.topList ul{

    padding:5px;

}

.topList li{

    list-style-type:none;

    height:16px;

    line-height:16px;

    margin:10px 0;

}

.topList a:link,.topList a:visited{

    text-decoration:none;

    font-size:12px;

    color:#000;

}

.topList a:hover,.topList a:active{

    text-decoration:none;

    color:#C80;

}

.topList em{

    display:block;

    width:20px;

    height:16px;

    text-align:center;

    font-style:normal;

    color:#333;

    background:url(http://img1.sycdn.imooc.com//53cf0fa20001d3dc00200032.jpg) no-repeat bottom;

    float:left;

}

.top em{

    background:url(http://img1.sycdn.imooc.com//53cf0fa20001d3dc00200032.jpg) no-repeat top;

}