.aligncenter {
    text-align: center;
    margin: 0 auto;
}

.wp-block-image img {
    box-sizing: border-box;
    height: auto;
    max-width: 100%;
    vertical-align: bottom;
}

.wp-block-image :where(figcaption) {
    margin-bottom: 1em;
    margin-top: .5em;
}