#box{
    width: 560px;
    margin: 0 auto;
    border: 1px solid #000;
}

#box h3{
    text-align: center;
    margin: 10px;
}

#box ul{
    width: 560px;
    padding: 0;
    list-style: none;
}

#box ul li{
    width: 100px;
    height: 100px;
    border: 1px solid #000;
    margin: 5px;
    float: left;
    position: relative;
    background-color: #F0F0F0;
    padding:10px;
    box-sizing: border-box;
    line-height: 30px;
    font-size: 12px;
    font-weight: 700;
    color: #666666;
    
}
#box li img{
    display: none;
    border: 2px solid #ccc;
    position: absolute;
    top: -9px;
    left: -9px;
    z-index: 1;
}
#box li span{
    display: block;
    font-weight: 400;
}
.clear{
    clear: both;
}