---
id: heading
scope: theming
---

The `Heading` component is a single part component. All of the styling is
applied directly to the `h2` element.

> To learn more about styling single part components, visit the
> [Component Style](/docs/styled-system/component-style#styling-single-part-components)
> page

## Theming properties

The properties that affect the theming of the `Heading` component are:

- `size`: The size of the divider. Defaults to `xl`.

## Theming utilities

- `defineStyle`: a function used to create style objects.
- `defineStyleConfig`: a function used to define the style configuration for a
  single part component.

```js
import { defineStyle, defineStyleConfig } from '@chakra-ui/react'
```

## Customizing the default theme

```js
import { defineStyle, defineStyleConfig } from '@chakra-ui/react'

const custom = defineStyle({
  color: 'yellow.500',
  fontFamily: 'mono',
  fontWeight: 'semibold',
  // let's also provide dark mode alternatives
  _dark: {
    color: 'yellow.300',
  },
})
```

After customizing the heading theme, we can import it in our theme file and add
it in the components property:

```js
import { extendTheme } from '@chakra-ui/react'
import { headingTheme } from './components/heading'

export const theme = extendTheme({
  components: { Heading: headingTheme },
})
```

> This is a crucial step to make sure that any changes that we make to the
> heading theme are applied.

## Adding a custom variant

Let's assume we want to include a custom branded variant. Here's how we can do
that:

```js
import { defineStyle, defineStyleConfig } from '@chakra-ui/react'

const underline = defineStyle({
    color: "orange.500",
    borderBottom: "2px",
    borderRadius: "10",
    fontFamily: "serif"
    // let's also provide dark mode alternatives
    _dark: {
        color: 'orange.400',
    },
    _hover: {
        borderColor: "red.200",
        _dark: {
            borderColor: "red.300"
        }
    }
})

// Now we can use the new `underline` variant
<Heading variant="underline">...</Heading>
```

Every time you're adding anything new to the theme, you'd need to run the cli
command to get proper autocomplete in your IDE. You can learn more about the CLI
tool [here](/docs/styled-system/cli).

## Changing the default properties

```js
import { defineStyleConfig } from '@chakra-ui/react'

export const headingTheme = defineStyleConfig({
    defaultProps: {
        size: 'xl',
        variant: 'custom',
        colorScheme: 'brand',
    },
})

// This saves you time, instead of manually setting the size,
// variant every time you use a heading:
<Heading size="xl" variant="underline">...</Heading>
```

## Showcase

import {
  App,
  Index,
  HeadingTheme,
} from 'configs/sandpack-contents/component-theming/heading'

<SandpackEmbed
  files={{
    '/theme/components/Heading.ts': HeadingTheme,
    '/App.tsx': App,
    '/index.tsx': {
      code: Index,
      hidden: true,
    },
  }}
  dependencies={{
    'react-icons': '^4.4.0',
  }}
/>