diff --git a/src/room/VideoPreview.module.css b/src/room/VideoPreview.module.css
index 8b34b8a1..573807fe 100644
--- a/src/room/VideoPreview.module.css
+++ b/src/room/VideoPreview.module.css
@@ -66,6 +66,7 @@ video.mirror {
     margin-inline: 0;
     border-radius: 0;
     block-size: 100%;
+    width: 100%;
   }
 
   .buttonBar {