MediaWiki:Common.css

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/* ===== Final Tested CSS to remove top-bottom white space under logo ===== */

/* Remove header extra space */
.vector-header, .vector-header-start, .vector-header-container {
    padding-top: 0 !important;
    padding-bottom: 0 !important;
    margin-top: 0 !important;
    margin-bottom: 0 !important;
    min-height: 0 !important;
    height: auto !important;
    align-items: center !important;
}

/* Perfectly center the logo */
.vector-header-logo, .mw-logo-icon {
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    width: 100px !important;     /* आवश्यकता अनुसार 100, 120, 150 */
    height: auto !important;
    margin: 0 !important;
    padding: 0 !important;
    background-size: contain !important;
    background-repeat: no-repeat !important;
    background-position: center center !important;
}

/* Adjust inner container for alignment */
.vector-header-start > a {
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    height: 100% !important;
    width: auto !important;
}