.wp-block-pmb-map-gutenberg {

    position: relative;
}

    .wp-block-pmb-map-gutenberg__map-viewport {

        width: 100%;
    }

    .wp-block-pmb-map-gutenberg .pmb-map {

        width:  100%;
        height: 100%;
    }

    .wp-block-pmb-map-gutenberg .ol-map-controls {

        position: absolute;
        top:      3rem;
        right:    3rem;
        width:    auto;
    }