tweak more image sizes

web/src/components/venues/VenueItem.tsx

@@ -26,7 +26,7 @@ export const VenueItem = ({ venue }: { venue: VenueFragment }) => {
             alt={featuredImage.alt}
             width={0}
             height={0}
-            sizes="20vw"
+            sizes="(max-width: 600px) 100vw, (max-width: 900xpx) 50vw, 35vw"
           />
         )}
       </div>