Be
careful when editing a style, because any
changes you make affect the appearance of all
the pages that use the style. Also, if you delete
a style, all pages that use the style revert to the page
group default style, or the system default style
if there is no page group default style.
A style controls the colors and fonts used by pages and all the tabs, portlets, and items displayed within them. If you want to apply a consistent layout to a group of pages, you need to use a page template.
You can use a single style for all your pages to give them uniform appearance. This means that you can change the look of all your pages just by changing the style to which the pages adhere (assuming that you have the appropriate privileges to do so). If you prefer, you can apply different styles to give each page a distinct look. You can even apply different styles to the regions within a page.
The amount of control you have over the style of a page depends on your privileges:
If you have Manage Style privileges on a page, you can apply a different style to the page, edit existing styles to change the colors and fonts used, or create new styles.
If you have Manage privileges on a page, you apply a different style to the page only if the Enable page owners to control style page group setting is enabled.
If you have Style Customization privileges on a page, you can apply a different style to your version of the page.
Note: If you have Manage Styles privileges on the page group, you can perform any action on any style in the page group. If you are the portal administrator, you can perform any action on any style in any page group.