#topline p {
    margin: 0;
    padding: 0;
    text-align: center;
}
#topline {
    background-color: rgba(255, 255, 255, 0.6);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 99;
}
* {
    box-sizing: border-box;
}
html, body {
    height: 100.1%;
}
body {
    font-size: 100%;
    height: 100%;
    margin: 0;
    min-height: 100%;
    min-width: 100%;
    padding: 0;
    position: absolute;
    width: auto !important;
}

.iframe_karten {
    height: 100%;
    min-height: 950px;
    position: relative;
    width: 100%;
}