Merge pull request #727 from technoboy10/gh674-ie11-card-margin

Fix GH-674: Waiting room cards should be centered in IE

src/views/teacherregistration/teacherregistration.scss

@@ -149,7 +149,7 @@ body {
         }
 
         .card {
-            margin: 1rem 0;
+            margin: 1rem auto;
             padding: 1.5rem;
             width: initial;