.event-map { aspect-ratio:0.772; filter: drop-shadow(1px 2px 5px rgba(0, 0, 0, 0.1)) drop-shadow(0px 0px 1px rgba(0, 0, 0, 0.05)); }
#map:after { content:''; position:absolute; width:100%; aspect-ratio:0.772; background:url('https://cdn.tribute-media.com/service/page-6356-8650-1786754799.jpg'); background-size:contain; }
#map > div { visibility: hidden; }

@media (max-width: 600px) {
    .event { grid-template: auto / auto; }
}