MediaWiki:Citizen.css

/* All CSS here will be loaded for users of the Citizen skin */
:root {
    --transform-image-hover: none;
}

.infobox-group-buttons {
    display: flex;
    gap: 4px;
    margin-bottom: 6px;
}

.infobox-group-button {
    background: #f2f2f2;
    border: 1px solid #ccc;
    padding: 4px 8px;
    cursor: pointer;
}

.infobox-group-button:hover {
    background: #e8e8e8;
}