import Paper from '@mui/material/Paper'; import Stack from '@mui/material/Stack'; import Box from '@mui/material/Box'; import { styled } from '@mui/material/styles'; const Item = styled(Paper)(({ theme }) => ({ backgroundColor: '#fff', ...theme.typography.body2, padding: theme.spacing(1), textAlign: 'center', color: (theme.vars ?? theme).palette.text.secondary, flexGrow: 1, ...theme.applyStyles('dark', { backgroundColor: '#1A2027', }), })); export default function FlexboxGapStack() { return ( Item 1 Item 2 Long content ); }