.top-list {
    float: left;
}
.top-list li {
    float: left;
    padding-left: 5px;
    position: relative;
}
.top-list img{
    height: 87px;
    width: 87px;
}
.top-list i {
background-image: url(../images/icon.png);
background-repeat: no-repeat;
display: block;
width: 32px;
height: 32px;
font-size: 0;
}
.i-wechat {
    background-position: 0px -47px;
}
.i-weibo {
    background-position: 0px -91px;
}
.i-app {
    background-position: 0px -6px;
}