Reduce width of mission statement on homepage

Author: dangerworm

index.html

@@ -33,7 +33,7 @@
     <div class="col-12 center-when-small">
         <h1>Welcome to CodeWith!</h1>
     </div>
-    <div class="col-12 text-center">
+    <div class="offset-lg-2 col-lg-8 text-center">
         <h4>
             Our mission is to create a virtual space for adults to pursue programming-related learning
             and conversation, where everyone is valued, everyone has agency, and everyone is supported.