.wp-block-search__inside-wrapper {
    display: flex;
    flex: auto;
    flex-wrap: nowrap;
    max-width: 100%;
}
.wp-block-search__input {
    appearance: none;
    border: 1px solid #949494;
    flex-grow: 1;
    margin-left: 0;
    margin-right: 0;
    min-width: 3rem;
    padding: 8px;
    text-decoration: unset !important;
}
.wp-block-search__button {
    background-color: var(--wp--preset--color--primary);
    color: var(--wp--preset--color--color-light);
    cursor: pointer;
    padding: 10px 20px;
}