.bannervideomobil{
    position:static;
    right:0px;
    z-index: -1;
}
.bannervideomobil{
    
    right:0px;
    z-index: -1;
    width: 100%;
    height: 500px;
}

@media (min-aspect-ratio:16/9) {
    .bannervideomobil{
        width:100% ;
        height: auto;
    }
}

@media (max-aspect-ratio:16/9) {
    .bannervideomobil{
        width: auto;
        height:100%;
    }
}