MediaWiki:Vector.css

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

.embedvideo iframe {
    width: 100% !important;
    height: auto !important;
    aspect-ratio: 16 / 9;

table.responsive-three-cols td.col3 {
    width: 33%;
    background: #ffeecc !important;
    }

@media screen and (max-width: 720px) {
    .col2-responsive td {
        display: block !important;
        width: 100% !important;
        padding-right: 0 !important;
        box-sizing: border-box !important;
    }
    table.responsive-three-cols td.col3 {
        display: block;
        width: 100%;
    }

MediaWiki:Vector.css

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