body{
    width: 99%;
    height: 100%;
    background-color: #0c0c0c;
    background-image: url("../img/login/back.png")  ;
}

#wdiv{

    width: 400px;
    height: 500px;
    margin-top: 15.5%;
    margin-left: 41.8%;
}
.fdiv{
    color: #FFFFFF;
    font-size:32px;
}
.mdiv{
    position: relative;
    margin-top: 40px;
    width: 100%;
    height: 360px;
    background-image: url("../img/login/denglu.png")  ;
    background-repeat: no-repeat;

}