Noissue - Format CSS comments and implement new wd classes

static/scss/content/_typography.scss

 // This file is part of help.eyeo.com.
 // Copyright (C) 2017 Eyeo GmbH
 //
 // help.eyeo.com is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation, either version 3 of the License, or
 // (at your option) any later version.
 //
 // help.eyeo.com is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 // GNU General Public License for more details.
 //
 // You should have received a copy of the GNU General Public License
 // along with help.eyeo.com.  If not, see <http://www.gnu.org/licenses/>.
 
+/*******************************************************************************
+ * Typography
+ ******************************************************************************/
+
 .h1
 {
   font-size: $font-size-h3;
   line-height: 1.2;
 
   @media (min-width: $phablet-breakpoint)
   {
     font-size: $font-size-h2;
   }
 
@@ skipping 22 matching lines @@
 
 a
 {
   color: $font-color-link;
 }
 
 .product-heading
 {
   @extend .h1;
   @extend .section;
-  @extend .ta-center;
+  @extend .text-center;
 
   .has-pre-icon
   {
     display: inline-block;
   }
 }
 
 .article-heading
 {
   @extend .h2;
 }