Add bottom padding to downloads heading

Change-Id: I78d85bf3b2736d3d103aef5db61861fca7ac9585
diff --git a/index.html b/index.html
index 86f0a5d..de6596f 100644
--- a/index.html
+++ b/index.html
@@ -140,7 +140,7 @@
         <div class="col-md-6 order-2 order-md-1 mt-4"> <img class="img-fluid d-block mx-auto"
             src="images/phone-multitasking.png" width="50%"> </div>
         <div class="px-md-5 col-md-6 d-flex flex-column align-items-start justify-content-center order-1 order-md-2">
-          <h3 class="display-3">Downloads</h3>
+          <h3 class="display-3 mb-4">Downloads</h3>
           <img
             src="https://img.shields.io/sourceforge/dm/blissroms.svg?style=for-the-badge&amp;logo=appveyor&amp;colorB=blue"
             max-width="160px" width="50%">