@media (min-width: 600px) {   
    figure.wp-block-gallery.has-nested-images.multiple-images {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 0 15px;
        padding: 0 15px;
        margin-bottom: 40px;
        
        .wp-block-gallery {
            flex-wrap: nowrap !important;
        }
    }
    
    figure.wp-block-gallery.has-nested-images.columns-default {
        display: grid;
        grid-template-columns: 1fr 1fr 1fr;
        margin: 0 0 40px !important;
        
        .wp-block-gallery {
            flex-wrap: wrap !important;
        }
    }

    figure.wp-block-gallery.has-nested-images .wp-block-image {
        width: 100% !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
    }
} 

.wp-block-gallery.has-nested-images figure.wp-block-image figcaption {
    bottom: -14px !important;
}