Preventing Display Style Overrides for Page Elements
You can prevent the system from overriding display styles you set for a page element in the Class Name, Styles and Theme fields in the Layout grid. Each row in the Layout grid features a No Styles Override box. Select the box to prevent display style overrides for an element anytime template synchronization occurs using the Synch Element Types button, such as when a new template is applied to a layout page or when a template has been modified and the changes are synchronized with a layout page.
In these cases, the displays styles you have defined for a page element remain in effect when the No Styles Override box is selected for a page element.