Page Class Suffix. Optional entry. Allows you to enter a CSS class suffix that will be attached to all classes of this page. This allows you to create customized CSS styles that will apply just to selected pages. You would then modify the "template.css" file of your template to apply styling to this new class.
Enter this parameter with a leading space to create a new CSS class for each element. Enter the parameter without a leading space to change the CSS class name for each element.