body{
    background:url(/static/images/bg2.jpg);
    background-size:100%;
    margin: 0 auto;
    background-repeat: no-repeat;
}
h3{
    text-align: center;
    color: white;
    margin-top: 25px;
}

.banner{
    background-color:rgba(36,82,175,0.83);
    font-size:20px;
    padding:10px;
    text-align:center;
}

.banner-link{
    margin-right:20px;
    color:white;
    text-decoration:none;
}

.lun{
    margin-left: 5%;
    width: 90%;
    margin-top:3%;
}

.div_img{
    text-align: center;
    margin-top:3%;
}

.bgmusic{
width:80px;
height:80px;
position:fixed;
right:-1%;
top:8%;
}