diff --git a/src/components/ref-gallery.webc b/src/components/ref-gallery.webc
index 2f2414b..9330626 100644
--- a/src/components/ref-gallery.webc
+++ b/src/components/ref-gallery.webc
@@ -19,15 +19,15 @@
     });
   };
 
-  const progress = ({ target: { scrollLeft, scrollLeftMax } }) => {
-    galleryIndicator.style.width = `${(scrollLeft / scrollLeftMax) * 100}%`;
+  const progress = ({ target: { scrollLeft, scrollWidth, offsetWidth } }) => {
+    galleryIndicator.style.width = `${(scrollLeft / (scrollWidth - offsetWidth)) * 100}%`;
   };
 
   const isAtEnd = () => {
-    galleryTrack.scrollLeft === 0
+    galleryTrack.scrollLeft <= 0
       ? (galleryPrevious.disabled = true)
       : (galleryPrevious.disabled = false);
-    galleryTrack.scrollLeft === galleryTrack.scrollLeftMax
+    galleryTrack.scrollLeft >= galleryTrack.scrollWidth - galleryTrack.offsetWidth
       ? (galleryNext.disabled = true)
       : (galleryNext.disabled = false);
   };