.wp-block-file__button {
    background: #32373c;
    color: #fff;
    text-decoration: none;
    padding: var(--space-20);
    text-align: center;
}
.wp-block-file:not(.wp-element-button) {
    padding-top: var(--space-20);
    font-size: .8em;
    text-align: center;
}