This handbook is about changing the look and feel of a Drupal site.
You can change the administrative settings to modify the appearance of the theme, you can copy an existing theme and then change or extend the code, or you can build a complete theme from scratch.
You can do more with a theme than change the appearance of an entire site. It is also possible to "theme" only certain sections of a site, certain types of content, or even individual pages. For example, your theme could specify a different look for just the front page of your site.
Some other things that you can do with a theme are:
- Change layouts, images or fonts
- Hide or display fields dependent on user role
- Dynamically respond to changes in the content or to user input
- Modify or replace text (e.g., labels or attributes) and variables generated by modules
It's also possible to port open source designs between other systems (Joomla! templates, WordPress themes, etc.) and Drupal, or convert any website layout or template into a Drupal theme
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