body:after{
content:"";
position:fixed;
top:0;
height:100%;
left:0;
right:0;
z-index:-1;
background: url(1ahomeservice-hintergrund_pflege.jpg) center center;
-webkit-background-size: cover;
-moz-background-size: cover;
-o-background-size: cover;
background-size: cover;
}