diff --git a/main.js b/main.js
index 7ffa370..f1ecc9f 100644
--- a/main.js
+++ b/main.js
@@ -118,3 +118,5 @@ map.on('click', function (evt) {
 
   popupOverlay.setPosition(evt.coordinate);
 });
+
+new ResizeObserver(() => map.updateSize()).observe(document.getElementById("map"));