* {
    margin: 0;
    padding: 0;
    background: #0e1420;
}

header {
    height: 10px;
}

.content {
    min-height: calc(100vh - 200px - 10px);
    /* hoehe = 100% - 200px (footer) - 10px (header) */
}

footer {
    height: 200px;
    background-image: url(images/morosinotto-footer-2000x200.jpg);
}