How can I make a component responsive in Material UI?

I am relatively new to material UI and I have designed a text field of type search. I would like it to be responsive. But I am failing to render the textfield in screen sizes with width smaller than 423

<Box
  sx={{ flexGrow: 1 }}
  m={5} pt={5}
  display="flex"
  justifyContent="flex-end"
  alignItems="flex-end"
>
  <Grid item sx={{ flexGrow: 1 }} spacing={{ xs: 1, md: 2,lg:2}} columns={{ xs: 2, sm: 2, md: 12 ,lg: 22}} display="flex"
justifyContent="center"
alignItems="center" marginLeft={8} marginRight={1} mt={4} width='100%'>
    <SearchIcon style={{ coSelf: "center", margin: "5px" }} />
    <TextField
      id="standard-search"
      label="Search for a company..."
      type="search"
      variant="standard"
      textAlign="center"
      fullWidth

    />
  </Grid>
  <Button onClick={() => setLight((prev) => !prev)} variant="contained" color="primary" sx={{ height: 40 }}>
    <SettingsIcon/>
  </Button>
</Box>

Any help is appreciated.

Seems your search component is rendered but hiding behind the Stock Market Charting header as it gets longer in smaller screen sizes. If you have it as a fixed position try changing it to relative position, or remove/reduce the text inside it so it gets shorter for a quick test and might reveal the search component.