MediaWiki:Minerva.css

/* All CSS here will be loaded for users of the MinervaNeue skin */

.minerva-header .branding-box a {
    display: block;
    background-image: url('https://koranserver.de/images/5/50/Koranserver_Logo.png');
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    width: 50px; /* Breite des Logos */
    height: 50px; /* Höhe des Logos */
}

.minerva-header .branding-box a span {
    display: none;
}