.media-archive-preview-wrapper { max-width: 100%; min-height: 50px; position: relative; } .media-archive-preview-wrapper object, .media-archive-preview-wrapper iframe { max-width: 100%; position: relative; } .media-archive-preview-wrapper .js-fallback { left: 0; margin-top: -0.5em; position: absolute; right: 0; text-align: center; top: 50%; }