WordPress/wp-includes/blocks/search/editor.min.css

.wp-block[data-align=center] .wp-block-search .wp-block-search__inside-wrapper{margin:auto}.wp-block-search .wp-block-search__button{align-items:center;border-radius:initial;display:flex;height:auto;justify-content:center;text-align:center}.wp-block-search__components-button-group{margin-top:10px}