.zoom {
    position: absolute; top: 0; right: 0; max-width: 700px; width: 45%; height: 650px; overflow: hidden; z-index: 100;
    box-shadow: 0px 0px 5px 0px #000000; -moz-box-shadow: 0px 0px 5px 0px #000000; -webkit-box-shadow: 0px 0px 5px 0px #000000;
    background: #fff;
}
.zoom img {
    width:1500px; height: auto; max-width: 300%; position: absolute; top: 0; left:0; z-index: 1;
}
.zoom span {
    position: absolute; top: 0; left: 0; background: #fff; z-index: 2; display: none;
}

@media only screen and (min-width: 1160px)
{
.artbildrahmen a {
    cursor: zoom-in;
    }
}

@media only screen and (max-width: 1160px)
{
.zoom { display: none;}
}