#visul{
	width:100%;
	position:relative;
}
#banner{
	position:fixed;
	z-index:-1;
	left:0;
	width:100%;
	top:0;
}
.banner-vimg{
    position: absolute;
    top: 0;
    left: 0;
    background-repeat: no-repeat;
    background-position: 50% 50%;
    width: 100%;
    z-index: 1;
    height: 100%;
}
@media screen and (max-width: 980px) {
	.banner-vimg{
		background-size: 50%;	
	}
}