Styling

Styling overview

Functional styles

You are in control of all aspects of styling, including functional styles. For example—by default—a Dialog Overlay won't cover the entire viewport. You're responsible for adding those styles, plus any presentation styles.

Classes

All components and their parts accept a className prop. This class will be passed through to the DOM element. You can use it in CSS as expected.

Data attributes

When components are stateful, their state will be exposed in a data-state attribute. For example, when an Accordion Item is opened, it includes a data-state="open" attribute.

Styling with CSS

Styling a part

You can style a component part by targeting the className that you provide.

import * as React from "react";
import { Accordion } from "radix-ui";
import "./styles.css";

const AccordionDemo = () => (
	<Accordion.Root>
		<Accordion.Item __className__="AccordionItem" value="item-1" />
	</Accordion.Root>
);

export default AccordionDemo;

Styling a state

You can style a component state by targeting its data-state attribute.

.AccordionItem {
	border-bottom: 1px solid gainsboro;
}

.AccordionItem[__data-state__="open"] {
	border-bottom-width: 2px;
}

Styling with CSS-in-JS

The examples below are using styled-components, but you can use any CSS-in-JS library of your choice.

Styling a part

Most CSS-in-JS libraries export a function for passing components and their styles. You can provide the Radix primitive component directly.

import * as React from "react";
import { Accordion } from "radix-ui";
import styled from "styled-components";

const StyledItem = __styled__(Accordion.Item)`
  border-bottom: 1px solid gainsboro;
`;

const AccordionDemo = () => (
	<Accordion.Root>
		<StyledItem value="item-1" />
	</Accordion.Root>
);

export default AccordionDemo;

Styling a state

You can style a component state by targeting its data-state attribute.

import { Accordion } from "radix-ui";
import styled from "styled-components";

const StyledItem = styled(Accordion.Item)`
	border-bottom: 1px solid gainsboro;

	&[__data-state__="open"] {
		border-bottom-width: 2px;
	}
`;

Extending a primitive

Extending a primitive is done the same way you extend any React component.

import * as React from "react";
import { Accordion as AccordionPrimitive } from "radix-ui";

const AccordionItem = React.forwardRef<
	React.ElementRef<typeof AccordionPrimitive.Item>,
	React.ComponentPropsWithoutRef<typeof AccordionPrimitive.Item>
>((props, forwardedRef) => (
	<AccordionPrimitive.Item {...props} ref={forwardedRef} />
));
AccordionItem.displayName = "AccordionItem";

Summary

Radix Primitives were designed to encapsulate accessibility concerns and other complex functionalities, while ensuring you retain complete control over styling.

For convenience, stateful components include a data-state attribute.