材料的UI <Grid item> 组件的宽度为100％的子代与父代重叠

Question

When I have a full width children in a Grid item, the children overlaps to the right side of its parent.

I have reproduced the code with the problem I'm having. https://codesandbox.io/s/rn88r5jmn

 import React, { Component } from "react"; import { Paper, Grid, Button } from "@material-ui/core"; import { withStyles } from "@material-ui/core/styles"; class Demo extends Component { render() { const { classes } = this.props; return ( <Paper> <Grid container spacing={16}> <Grid item xs={6}> <Button variant="raised" fullWidth className={classes.button}> asdf </Button> </Grid> <Grid item xs={6}> <Button variant="raised" fullWidth className={classes.button}> asdf </Button> </Grid> </Grid> </Paper> ); } } const styles = theme => ({ button: { margin: theme.spacing.unit } }); export default withStyles(styles)(Demo); 

Gives me the result below:

Answer 1

The problem isn't the fullWidth prop, but the margin you are setting to the buttons, you can do something like this instead:

https://codesandbox.io/s/nnxl20l2q0

import React, { Component } from "react";
import { Paper, Grid, Button } from "@material-ui/core";
import { withStyles } from "@material-ui/core/styles";
class Demo extends Component {
  render() {
    const { classes } = this.props;
    return (
      <Paper className={classes.paper}>
        <Grid container spacing={16}>
          <Grid item xs={6}>
            <Button variant="raised" fullWidth>
              asdf
            </Button>
          </Grid>
          <Grid item xs={6}>
            <Button variant="raised" fullWidth>
              asdf
            </Button>
          </Grid>
        </Grid>
      </Paper>
    );
  }
}
const styles = theme => ({
  paper: {
    padding: theme.spacing.unit
  }
});
export default withStyles(styles)(Demo);