MediaWiki:Common.css

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/* CSS placed here will be applied to all skins */
/* Hide the site title */
#p-logo a {
    display: none;
}

/* Add a background image for the logo */
#p-logo {
    background-image: url('/images/boat.png');
    background-repeat: no-repeat;
    background-size: contain;
    width: 150px; /* Adjust width as needed */
    height: 50px; /* Adjust height as needed */
}