update homepage

Author: mrmrs

index.html

@@ -493,7 +493,7 @@ <h4 class="mt4 fw6 f6">Narrow Measure</h4>
     </article>
 </div>
 </div>
-    <article class="mt5">
+    <article class="mt5 id="grids"">
       <div class="ph3 ph5-ns">
         <div class="mw9 center">
           <h3 class="f6 ttu fw6 mt0 bb pb2">Grids</h3>