.wp-block-search__button-only .wp-block-search__inside-wrapper {
    position: relative;
}

.wp-block-search__button-only .wp-block-search__input {
    position: absolute;
    top: 0;
    right: 100%;
}

.wp-block-search__button-only .wp-block-search__button {
    transition: background-color 0.25s ease;
}

.wp-block-search__button-only:not(.wp-block-search__searchfield-hidden) .wp-block-search__button {
    background-color: var(--wp--preset--color--secondary);
}