Editing CSS styling
It is possible to edit the default CSS styling and specify custom styling.
Procedure
1. Click Select sites button on the top right of the application, below the Header.
2. Select Edit sites.
The Sites dialog box opens.
3. Select the site for which you want to customize the CSS styling.
4. In the CSS field, edit the CSS for the site and all its definitions.
5. Click Save. Reload the web page to view the changes.
* 
Only valid CSS, compliant with W3C standards should be applied.
CSS class names should all be lowercase.