Update lang.html

Author: benhatsor

homepage/lang.html

@@ -198,8 +198,13 @@
     window.addEventListener('scroll', () => {
 
       const scrollPos = scrollEl.scrollTop;
-      const opacityPercent = 1 - (scrollPos / scrollEnd);
-      logo.style.opacity = opacityPercent;
+      
+      if (scrollPos <= scrollEnd) {
+        
+        const opacityPercent = 1 - (scrollPos / scrollEnd);
+        logo.style.opacity = opacityPercent;
+        
+      }
 
     });