.wp-block-gutenberg-fullwidth-image {
    text-align: center;
}

.wp-block-gutenberg-fullwidth-image img {
     display: inline-block;
 }

.wp-block-gutenberg-fullwidth-image figcaption {
    color: #96d100;
    font-size: 22px;
    font-weight: 400;
    font-family: Roboto;
    margin-top: 1em;
    line-height: 24px;
    opacity: 1;
}