Fix callout size to fit parent container

app/assets/stylesheets/pages/profile.scss

@@ -286,8 +286,8 @@ table.u2f-registrations {
 }
 
 .user-callout {
-  margin: 0 auto;
-  max-width: $screen-lg-min;
+  margin: 20px -5px auto -5px;
+  margin-top: 20px;
 
   .bordered-box {
     border: 1px solid $blue-300;