Universal selectors

A USS universal selector, also called the wildcard selector, matches any element. USS universal selectors are analogous to CSS universal selectors.

Syntax

The following is the syntax for a USS universal selector:

* { ... }

Example

To demonstrate how simple selectors match elements, here is an example UI(User Interface) Allows a user to interact with your application. Unity currently supports three UI systems. More info
See in Glossary Document.

<UXML xmlns="UnityEngine.UIElements">
  <VisualElement name="container1">
    <VisualElement name="container2" class="yellow">
      <Button name="OK" class="yellow" text="OK" />
      <Button name="Cancel" text="Cancel" />
    </VisualElement>
  </VisualElement>
</UXML>

With no styles applied, the UI looks like the following:

The following universal class selector style rule matches every element, and changes its background color to yellow. This includes the main area of the window, because the stylesheet is applied to the window’s root element.

* {
    background-color: yellow;
}

The UI looks like the following when you apply the style:

Additional resources

• Best practices for USS