Fix right side link box

_sass/extras.scss

@@ -2707,7 +2707,7 @@ html body .md-typeset .headerlink {
         position: sticky;
         top: 4rem;
         height: -webkit-calc(100vh - 10rem);
-        height: calc(150vh - 10rem);
+        height: calc(100vh - 4rem);
         overflow-y: auto;
     }
 }