main {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 90vh; /* Vollständige Höhe des Viewports */
    text-align: center;
    flex-direction: column; /* Änderung: Inhalt vertikal anordnen */
}
img, video {
    width: auto;
    max-height: 80%;
}
body {
    margin: 0;
    padding: 0;
    background: #28282a;
}
footer {
    width: 100%;
    text-align: center;
    font-size: 14px;
}
body, html {
    overflow: hidden;
}
a {
    font-family: sans-serif;
    text-decoration: none;
    font-size: 18px;
    color: #fff;
    margin-top: 1.0rem;
}
footer a {
    font-size: 14px;
}
@media only screen and (max-width: 600px) {
  img, video {
        max-width: 90%;
        height: auto;
    }
}