Until now you've changed the design by setting the built-in template options to your taste. If you want more control over the look of your site, you can also edit the HTML and CSS code of an existing template. Joomla! 1.6 features a new editor to make this a little easier.
You can edit the code files by navigating to Extensions | Template Manager. Click on the Templates tab and then click on the Details link next to the template name (for example, beez_20 Details). Click on a filename to open the file and adjust the code. You can edit both the HTML in the main template file (index.php
) and the template CSS files.