Issue #2550925 by PrineShazar, maijs, LewisNyman, opdavies, justAChris: Header...

Issue #2550925 by PrineShazar, maijs, LewisNyman, opdavies, justAChris: Header style in seven theme with drupal set message

core/themes/seven/css/components/messages.css

@@ -10,4 +10,12 @@
 .messages pre {
   margin: 0;
 }
+.messages h1, .messages .heading-a,
+.messages h2, .messages .heading-b,
+.messages h3, .messages .heading-c,
+.messages h4, .messages .heading-d,
+.messages h5, .messages .heading-e,
+.messages h6, .messages .heading-f {
+  margin-top: 0;
+}