body{
    width: 100%;
    height: 100%;
    font-family: Source Han Sans CN, Source Han Sans CN-Regular;
    min-width: 880px;
}
*{
    margin: 0;
    padding: 0;
}
ul,a{
    list-style-type: none;
    margin: 0;
    padding: 0;
}
.w{
    display: inline-block;
    width: 80%;
}