Update custom.css

Author: JoyelJohny

src/css/custom.css

@@ -10,10 +10,16 @@ html[data-theme='dark'] {
   margin: 0 auto;
   max-width: 1100px;
   padding: 0 70px;
+  margin-top: 30px;
 }
 
-.headings {
-  font-size: 50px;
+.help-heading-1 {
+  font-size: 3em;
+  margin-bottom: 30px;
+}
+
+.help-heading-2 {
+  font-size: 2.5em;
   margin: 30px 0;
 }