react-test/docs/data/system/components/grid/NestedGrid.tsx

import Box from '@mui/system/Box';
import Grid from '@mui/system/Grid';
import styled from '@mui/system/styled';

const Item = styled('div')(({ theme }) => ({
  border: '1px solid',
  borderColor: '#ced7e0',
  borderRadius: '4px',
  ...theme.applyStyles('dark', {
    borderColor: '#444d58',
  }),
}));

export default function NestedGrid() {
  return (
    <Box sx={{ flexGrow: 1 }}>
      <Grid container spacing={2}>
        <Grid size={{ xs: 12, md: 5, lg: 4 }}>
          <Item>Email subscribe section</Item>
        </Grid>
        <Grid container spacing={4} size={{ xs: 12, md: 7, lg: 8 }}>
          <Grid size={{ xs: 6, lg: 3 }}>
            <Item>
              <Box
                id="category-a"
                sx={{ fontSize: '12px', textTransform: 'uppercase' }}
              >
                Category A
              </Box>
              <Box component="ul" aria-labelledby="category-a" sx={{ pl: 2 }}>
                <li>Link 1.1</li>
                <li>Link 1.2</li>
                <li>Link 1.3</li>
              </Box>
            </Item>
          </Grid>
          <Grid size={{ xs: 6, lg: 3 }}>
            <Item>
              <Box
                id="category-b"
                sx={{ fontSize: '12px', textTransform: 'uppercase' }}
              >
                Category B
              </Box>
              <Box component="ul" aria-labelledby="category-b" sx={{ pl: 2 }}>
                <li>Link 2.1</li>
                <li>Link 2.2</li>
                <li>Link 2.3</li>
              </Box>
            </Item>
          </Grid>
          <Grid size={{ xs: 6, lg: 3 }}>
            <Item>
              <Box
                id="category-c"
                sx={{ fontSize: '12px', textTransform: 'uppercase' }}
              >
                Category C
              </Box>
              <Box component="ul" aria-labelledby="category-c" sx={{ pl: 2 }}>
                <li>Link 3.1</li>
                <li>Link 3.2</li>
                <li>Link 3.3</li>
              </Box>
            </Item>
          </Grid>
          <Grid size={{ xs: 6, lg: 3 }}>
            <Item>
              <Box
                id="category-d"
                sx={{ fontSize: '12px', textTransform: 'uppercase' }}
              >
                Category D
              </Box>
              <Box component="ul" aria-labelledby="category-d" sx={{ pl: 2 }}>
                <li>Link 4.1</li>
                <li>Link 4.2</li>
                <li>Link 4.3</li>
              </Box>
            </Item>
          </Grid>
        </Grid>
        <Grid
          container
          justifyContent="space-between"
          alignItems="center"
          flexDirection={{ xs: 'column', sm: 'row' }}
          sx={{ fontSize: '12px' }}
          size={12}
        >
          <Grid sx={{ order: { xs: 2, sm: 1 } }}>
            <Item>© Copyright</Item>
          </Grid>
          <Grid container columnSpacing={1} sx={{ order: { xs: 1, sm: 2 } }}>
            <Grid>
              <Item>Link A</Item>
            </Grid>
            <Grid>
              <Item>Link B</Item>
            </Grid>
            <Grid>
              <Item>Link C</Item>
            </Grid>
          </Grid>
        </Grid>
      </Grid>
    </Box>
  );
}