Customizing Your Website
In AEM, each site template loads common stylehsheets and javscripts that control the look and feel of every website. Some components can be further customized using the built-in component styles.
To create custom styles and scripts for your site, create a CSS or JS file using a text editor. Upload the file(s) to the DAM and add them to your Site Configuration page. Custom classes can be added to each component using the CSS class field.