html,body{margin:0;padding:0;height:100%}
body{font-family: 'Sunflower', sans-serif}
.content_index{
    height:100%;
    width:100%;
    background-image:url('/img/sfondo.jpg');
    background-size:cover;
}
.div_menu{
    width:33.333%;
    float:left;
}
.div_menu>.content{
    width:100%;
    text-align:center;
    margin:10px 0;
    padding:10px 0;
    /*background-image:url('/img/music.png');
    background-size:contain;
    background-repeat:no-repeat;
    background-position:center center;*/
    height:100px;
    font-size:40px;
    /* background:rgba(255,255,255,.5) */
}
.div_header{
    background-image:url('/img/index.jpg');
    background-size:contain;
    height:50%;
    background-repeat:no-repeat;
    background-position:center center;
}
.menu{
    height:50%;
}