Changes made to a supplied text style must be saved as a new custom style. When making changes to an existing custom style you may:
use the same style name to update the style, or
give the changed style a new name to create a new custom style.
In the Web Site drawer, click the Styles tab.
Click Edit in the row containing the text style you want to change. A new window displays the Edit Style screen.
Change the text family, text size and text style of each text type as necessary. Changes are displayed in the Preview window as they are made.
Save the changes to the style.
To save your changes to the current style, click Save.
OR
To save your changes to a new style, click Save As New Custom Style. Enter the name of your new style in the Name field, and then click OK.
The Styles tab is refreshed to reflect the changes.