Fix background colors

Author: meg-gutshall

_includes/events/landing_page.html

@@ -106,7 +106,7 @@ <h2 class="mb-20 unbold text-center">Code of Conduct</h2>
   </div>
 </section>
 
-<section class="pb-70 grey-bg">
+<section class="pb-70 white-bg">
   <div class="container">
     <div class="row">
       <div class="col-12 mb-20">
@@ -119,7 +119,7 @@ <h2 class="mb-20 unbold text-center">Code of Conduct</h2>
   </div>
 </section>
 
-<section class="pt-70 white-bg">
+<section class="pt-70 grey-bg">
   <div class="container">
     <div class="row justify-content-center">
       <div class="col-12 col-xl-9 text-center pb-30">