/* Only banners with a selected mobile image use these rules. */
.prb-picture{display:block;aspect-ratio:var(--prb-desktop-ratio)}
.prb-picture>img.img-responsive{display:block;width:100%;height:100%;object-fit:contain;margin-left:auto;margin-right:auto}
@media(max-width:767px){.prb-picture{aspect-ratio:var(--prb-mobile-ratio)}}