Update index.html

Author: benhatsor

index.html

@@ -345,7 +345,7 @@ <h2 class="color-1 weight-title-h font-title section__title center">A codeful of
   //const isVisible = (elemTop >= 0) && (elemBottom <= window.innerHeight);
 
   // Partially visible elements return true:
-  let isVisible = (elemTop - (el.clientHeight / 2)) < window.innerHeight;
+  let isVisible = (elemTop + (el.clientHeight / 2) + 20) < window.innerHeight;
 
   return isVisible;