*{
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color:rgba(0,0,0,0)
}
body{
    width: 100%;
    height: auto;
    background-color: #efefef;
    }
.a{
    width:15rem;
    height: 1.8rem;
    background-color:#efefef;
}
.fenge{
    width: 15rem;
    height: 0.16rem;
    float: left;
}