body,p,h1,h2,h3,h4,h5,h6,ul,ol,dl,dd,dt,input{
    margin:0;
    padding:0;
}
*,::before,::after{
    box-sizing:border-box;
    -webkit-box-sizing:border-box;
}
body{
    font-size:14px;
    font-family:"Microsoft YaHei";
}
ul{
    list-style:none;
}
a{
    text-decoration:none;
    color:inherit;
}
.clearfix::before,.clearfix::after{
    content:"";
    display:block;
    height:0;
    visibility:hidden;
    line-height:0;
    clear:both;
}
.fl{
    float:left;
}
.fr{
    float:right;
}