diff --git a/make_post_sell/static/css/common.css b/make_post_sell/static/css/common.css
index c18b39e..38966c3 100644
--- a/make_post_sell/static/css/common.css
+++ b/make_post_sell/static/css/common.css
@@ -1413,13 +1413,21 @@ textarea.markup-editor-textarea {
         order: 4;
     }
 
-    /* Watch mode mobile: wrapper is a plain block, video sticks at top */
+    /* Watch mode mobile: video sticks at top, nothing scrolls over it */
     .watch-left {
         order: 1;
     }
 
+    .watch-mode .product-images {
+        position: sticky;
+        top: 0;
+        z-index: 20;
+    }
+
     .watch-mode section.product-right {
         order: 2;
+        position: relative;
+        z-index: 5;
     }
 
     /* Ensure buttons get full width on mobile */