html {
    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr = '#4a4a4a', endColorstr = '#585855');
    -ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr = '#4a4a4a', endColorstr = '#585855')";
    background-image: -moz-linear-gradient(top, #4a4a4a, #585855);
    background-image: -ms-linear-gradient(top, #4a4a4a, #585855);
    background-image: -o-linear-gradient(top, #4a4a4a, #585855);
    background-image: -webkit-gradient(linear, center top, center bottom, from(#4a4a4a), to(#585855));
    background-image: -webkit-linear-gradient(top, #4a4a4a, #585855);
    background-image: linear-gradient(top, #4a4a4a, #585855);
    height: 100%;
}

.qr-code {
    -webkit-box-shadow: 5px 5px 30px 5px #000000;
    box-shadow: 5px 5px 30px 5px #000000;
    width: 259px;
    height: 259px;
    top: 50%;
    left: 50%;
    margin-top: -150px;
    margin-left: -150px;
    background-image: url(../bilder/qrcode.png);
    position: absolute;
}