Add sale disclaimer in top navbar

_includes/nav.html

@@ -44,4 +44,16 @@
         </div>
       </div>
 </nav>
+<div class="notification w-full text-center text-white p-2" style="background-color: #c5234c;">
+  <a href="{{ site.pricing_url }}">
+    <div class="mx-auto flex">
+      <i class="ml-auto h-4 w-4 mr-2 icon-heart"></i>
+      <span class="w-auto text-sm mr-auto text-white">
+        Valentine's Day <b class="underline">limited 69 SALE</b>
+        - get 30% off
+      </span>
+    </div>
+  </a>
+</div>
+
 <div class="horizontal-line"></div>