Even out padding in demo column

Author: thisisdano

pages/02-extending/index.html

@@ -23,7 +23,7 @@
         {% include "sxs/02-extending/part-two.html" %}
         {% include "sxs/02-extending/part-three.html" %}
       </div>
-      <div class="demo-display padding-top-4 maxw-mobile-lg">
+      <div class="demo-display padding-y-4 maxw-mobile-lg">
         <div class="position-sticky top-2 padding-2 padding-left-0">
           {% include "card.html" %}
           {% include "testimonial.html" %}