Styles overview

This guide will help you understand how to apply styles to Mantine and custom components.

Component specific props

Most of the components provide props that allow you to customize their styles. For example, Button component has color, variant, size and radius props that control its appearance:

Variant

Color

Size

Radius

import { Button } from '@mantine/core';

function Demo() {
  return <Button variant="filled">Button</Button>;
}

These props usually control multiple CSS properties, for example color and variant props control color, background-color and border properties. In most cases, changing components props is the most optimal way to customize Mantine components.

Style props

Style props work similar to component specific props, but with several differences:

Style props are not component specific, they can be used with any component.
Style props always control a single CSS property. For example, c prop controls CSS color property, while color prop controls a set of properties: color, background-color and border-color.
Style props are set in style attribute. It is not possible to override them with CSS without using !important.

Style props are useful when you need to change a single CSS property without creating a separate file for styles. Some of the most common use cases are:

Changing text color and font-size

import { Text } from '@mantine/core';

function Demo() {
  return (
    <div>
      <Text c="blue.8" fz="lg">
        Card title
      </Text>
      <Text c="dimmed" fz="sm">
        Card description
      </Text>
    </div>
  );
}

Applying margins to inputs inside a form:

import { TextInput } from '@mantine/core';

function Demo() {
  return (
    <form>
      <TextInput label="First name" />
      <TextInput label="Last name" mt="md" />
      <TextInput label="Email" mt="md" />
    </form>
  );
}

Adding padding to various elements:

import { Paper } from '@mantine/core';

function Demo() {
  return <Paper p="xl">My custom card</Paper>;
}

Note that style props were never intended to be used as a primary way of styling components. In most cases, it is better to limit the number of style props used per component to 3-4. If you find yourself using more than 4 style props, consider creating a separate file with styles – it will be easier to maintain and will be more performant.

Style prop

Style prop is supported by all Mantine components and allows setting CSS properties as well as CSS variables. It is useful in the following cases:

You want to apply a single CSS property to a component:

import { Button, Flex } from '@mantine/core';

function Demo() {
  return (
    <Flex>
      <Button style={{ flex: 1 }}>Large button</Button>
      <Button>Small button</Button>
    </Flex>
  );
}

You want to set a CSS variable based on component prop:

import { Box } from '@mantine/core';

function Demo({ color }: { color: string }) {
  // Later you will be able to use var(--my-color) in any nested element
  return <Box style={{ '--my-color': color }}>My box</Box>;
}

Style prop works the same way as React style prop. It is not recommended to use it as a primary way of styling components. In most cases, it is better to create a separate file with styles – it will be easier to maintain and will be more performant.

CSS modules

CSS modules is the recommended way of applying most of the styles to Mantine components. CSS modules are the most performant and flexible way of styling components.

// Demo.module.css

.root {
  padding-right: rem(100px);

  &[data-collapsed] {
    padding-right: rem(40px);

    & .control {
      max-width: rem(200px);
    }
  }
}

.control {
  background-color: var(--mantine-color-blue-1);
  color: var(--mantine-color-blue-filled);
  padding: var(--mantine-spacing-xl);
  margin-left: rem(40px);

  @media (max-width: $mantine-breakpoint-sm) {
    margin-left: 0;
    margin-top: var(--mantine-spacing-md);
  }

  @mixin hover {
    background-color: light-dark(
      var(--mantine-color-blue-1),
      var(--mantine-color-blue-9)
    );
  }
}

// Demo.tsx
import classes from './Demo.module.css';

function Demo({ collapsed }: { collapsed: boolean }) {
  return (
    <div
      className={classes.root}
      data-collapsed={collapsed || undefined}
    >
      <button type="button" className={classes.control}>
        Control
      </button>
    </div>
  );
}

Theme tokens

You can reference Mantine theme values in any styles with CSS variables:

In CSS modules:

.root {
  // references theme.colors.red[5]
  background: var(--mantine-color-red-5);

  // references theme.spacing.md
  margin-top: var(--mantine-spacing-md);

  // references theme.headings.fontFamily
  font-family: var(--mantine-font-family-headings);
}

In style props:

import { Box } from '@mantine/core';

function Demo() {
  // bg="red.5" references theme.colors.red[5]
  // "red.5" is a shorthand for var(--mantine-color-red-5)

  // mt="xl" references theme.spacing.xl
  // "xl" is a shorthand for var(--mantine-spacing-xl)
  return (
    <Box bg="red.5" mt="xl">
      My box
    </Box>
  );
}

In style prop:

import { Box } from '@mantine/core';

function Demo() {
  return (
    <>
      <Box
        style={{
          margin: 'var(--mantine-spacing-xl)',
          color: 'var(--mantine-color-orange-5)',
        }}
      >
        With CSS variables
      </Box>

      <Box
        style={(theme) => ({
          margin: theme.spacing.xl,
          color: theme.colors.orange[5],
        })}
      >
        With theme object
      </Box>
    </>
  );
}

Default props

Mantine styles

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