#vr1 {
    padding-bottom: 56%;
    position: relative;
    box-sizing: border-box;
    margin-left: 30px;
    margin-right: 30px;
    margin-bottom: 30px;
}

#vr1 iframe {
    box-sizing: border-box;
    border: none;
    position: absolute;
    width: 100% !important;
    height: 100%;
    z-index: 100;
    top: 0;
    left: 0;
    margin: 0;
    padding: 0;
}


@media only screen and (min-width: 768px) {
    #sehenswertes > a:link, #sehenswertes > a:visited {
        border-bottom: 3px solid white;
    }

    #vr1 {
        margin-left: 15px;
        margin-right: 15px;

    }


}