Stack

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

function Demo() {
  return (
    <Stack sx={(theme) => ({ backgroundColor: theme.colorScheme === 'dark' ? theme.colors.dark[8] : theme.colors.gray[0], height: 300 })}>
      <Button variant="outline">1</Button>
      <Button variant="outline">2</Button>
      <Button variant="outline">3</Button>
    </Stack>
  );
}