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## 11 Using Themes and Theme Styles

Developers can alter an application's user interface and page layout through themes and theme styles.

A theme is collections of templates that enable developers to define the layout and style of an entire application. A theme style is a CSS that is added to the base CSS.

- Using Themes
  Learn about the Universal theme and how to control the layout of your application using theme styles, Theme Roller, and template options.
- Managing Themes and Subscriptions
  Developers can manage themes directly or through the use of theme subscriptions.
- Creating Custom Themes
  Create a custom theme by modifying existing templates.
- Using Custom Cascading Style Sheets
  Control the style of a web page by uploading and referencing a cascading style sheet.

See Also:

How Oracle APEX Uses Templates