How to horizontally center an item in Material UI grid item?

问题

How do I center elements inside a Material UI Grid item? Here is a snippet from my React application:

<Grid container>
  <Grid item xs={4}>
    // Unrelated stuff here
  </Grid>
  <Grid item xs={4}>
    // How do I centre these items?
    <IconButton className={classes.menuButton} color="inherit">
      <EditIcon/>
    </IconButton>
    <IconButton className={classes.menuButton} color="inherit">
      <CheckBoxIcon/>
    </IconButton>
  </Grid>
  <Grid item xs={4}>
    // Unrelated stuff here
  </Grid>
</Grid>

I've tried applying alignContent, justify, alignItems (to the parent <Grid item>) with no success.

I thought this would be quite simple, but I've failed to find any information on centring items inside of grid items.

回答1:

Two seconds later... I solved this through some simple CSS:

<Grid item xs={4} style={{textAlign: "center"}}>
</Grid>

If there is another approach that is somehow more "correct", please feel free to post another answer.

回答2:

 <Grid container  className = {classes.root} align = "center" justify = "center" alignItems = "center"  >
            <CssBaseline/>
            <Grid item xs = {false} sm = {4} md = {6}>

            </Grid>
            <Grid item xs = {12} sm = {4} md = {6}>

            </Grid>
        </Grid>`enter code here`

回答3:

This is the correct way:

<Grid container item xs={4} justify="center">

if container property is set to true the component will have the flex container behavior.

Grid API

来源：https://stackoverflow.com/questions/52357717/how-to-horizontally-center-an-item-in-material-ui-grid-item