Make React background color span the full height

In my App.js file, I have a class that renders like this:

const theme = createMuiTheme({
  palette: {
    primary: lime,
    secondary: {
      ...grey,
      A400: '#00e677'
    },
    error: red
  }
});

class App extends Component {

  render() {
    const classes = this.props.classes;

    return (
      <div className={classes.root}>
        <MuiThemeProvider theme={theme}>
          <MyApp/>
        </MuiThemeProvider>
      </div>

    );
  }

export default withStyles(styles)(App);
// Styles for the root class
const styles = theme => ({
  root: {
    width: '100%',
    height: '100%',
    marginTop: 0,
    zIndex: 1,
    overflow: 'hidden',
    backgroundColor: theme.palette.background.default,
  }
});

Despite setting height:'100%', there is a blank space below the MyApp's div with a grey background, as shown in the attached image.

How can I ensure that the background color fills 100% of the window?

https://i.sstatic.net/ywVnR.png

Answer №1

Instead of utilizing height:100%, consider using height:100vh. Using % is dependent on the parent's height, while vh is based on the viewport's height. Setting 100vh will guarantee that the block fills the entire screen height.

For more information, you can refer to this resource

Answer №2

This response is inspired by Temani Afif's solution.

Utilizing Grommet in React, I ensured my theme background (a dark one!) filled the entire screen by customizing the style provider HOC like so:

 import styled from 'styled-components';
  FillGrommet = styled( Grommet )`min-height: 100vh;`;

Then, within the render() method, I implemented the following:

 return (
  <this.FillGrommet theme={ dark }>
    <AppBar /  
    ...

For optimal performance, it's recommended to apply styles outside of the render() function.

Answer №3

html {
  background-color: *selected color*;
}

By applying this code, the background color is altered beyond the dimensions of 100vh and 100vw.

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