*{ padding: 0; margin:0; font-size: '微软雅黑';}
ul,ol{
    list-style: none;
}
a{
    text-decoration: none;
}
.fl{
    float: left;
}
.fr{
    float: right;
}
.clearboth::after{
    content: '';
    overflow: hidden;
    display: block;
    height: 0;
    visibility: hidden;
    clear: both;
}
.banner{
    width: 100%;
    max-width: 1920px;
    min-width: 1200px;
    margin: 0 auto;
}
.wrapbox{
    width: 1200px;
    margin: 0 auto;
}