diff --git a/umap/static/umap/map.css b/umap/static/umap/map.css
index d78477e4..240e3783 100644
--- a/umap/static/umap/map.css
+++ b/umap/static/umap/map.css
@@ -1447,6 +1447,7 @@ a.add-datalayer:hover,
 .leaflet-contextmenu-icon {
     display: none;
 }
+.umap-popup-large img,
 .umap-popup-large iframe {
     /* See https://github.com/Leaflet/Leaflet/commit/61d746818b99d362108545c151a27f09d60960ee#commitcomment-6061847 */
     max-width: 100% !important;
@@ -1517,6 +1518,7 @@ a.add-datalayer:hover,
     .umap-permanent-credits-container {
         max-width: 100%;
     }
+    .umap-popup-large img,
     .umap-popup-large iframe {
         min-width: 300px;
     }