.schatten {
-webkit-box-shadow: 4px 4px 8px 0px rgba(0,0,0,0.75);
-moz-box-shadow: 4px 4px 8px 0px rgba(0,0,0,0.75);
box-shadow: 4px 4px 8px 0px rgba(0,0,0,0.75);
}