clean up after mailing list test

assets/styles/main.css

@@ -140,7 +140,3 @@ main > ul {
     margin-left: 1.25rem;
   }
 }
-
-.ml-embedded {
-  margin: 2rem auto;
-}

index.html

@@ -19,7 +19,7 @@
     <!-- JS -->
     <script src="/assets/scripts/nav.js" defer></script>
 
-     <!-- CSS -->
+    <!-- CSS -->
     <link rel="stylesheet" href="/assets/styles/main.css">
     <link rel="stylesheet" href="/assets/styles/nav.css">
   </head>