Improve styles and content consistency across multiple pages

Standardized H2 headings with a new `.h2-as-text` class for better alignment and styling. Adjusted footer and layout widths to 1200px for improved responsiveness. Updated the KI-Agents profiles, webinar section, and various style modules to ensure consistent formatting, better readability, and cleaner design.

docs/stylesheets/modules/footer.scss

@@ -12,7 +12,7 @@
 
   margin-left: auto;
   margin-right: auto;
-  max-width: 1080px;
+  max-width: 1200px;
   width: 100%;
   line-height: 2rem;
   padding-top: 3rem;
@@ -44,9 +44,9 @@
 .md-footer-custom-links{
   margin-left: auto;
   margin-right: auto;
-  max-width: 1080px;
+  max-width: 1200px;
   width: 100%;
   a{
     font-size: 1.2rem;
   }
-}
+}