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## 3.5.2 Theme Templates

Learn about the Universal Theme and how to control application layout using theme styles, Theme Roller, and template options.

A theme is a collection of templates that enables developers to define the layout and style of an entire application. When you create a new application, the Create Application Wizard uses the Universal Theme - 42 (Universal Theme). The Universal Theme features a responsive design, versatile UI components, and easy customization.

You can further modify a theme using:

- Theme Styles - A theme style is a CSS that is added to the base CSS. Using the Theme Roller utility, you can change the appearance of an application. Universal Theme - 42 includes theme styles.
- Theme Roller - Theme Roller is a live CSS editor available on the Customize menu on the Developer toolbar. Use Theme Roller to quickly change the theme style, colors, rounded corners and other application attributes.
- Template Options - Use template options to declaratively apply CSS modifiers to the templates you have chosen for pages, regions, reports, lists, breadcrumbs, items and buttons.

See Also:

- Understanding the Universal Theme
- Using Theme Styles
- Using Theme Roller
- Understanding Template Options and Using Template Options

Parent topic: How Oracle APEX Uses Templates