What is the best way to eliminate the border of an expansion panel in Material-UI?

Is there a way to eliminate the border surrounding the expansion panel in Material-UI?

Answer №1

To eliminate the box-shadow, simply adjust the elevation to 0:

<Accordion elevation={0}>

(please note: ExpansionPanel is now referred to as Accordion)

Answer №2

This method is effective with version "@material-ui/core": "4.9.9"

To implement this across the entire theme, you can use the following code:

const theme = createMuiTheme({
  overrides: {
    MuiExpansionPanel: {
      root: {
        '&:before': {
          display: 'none'
        },
      },
    },
  }
}

If you only want to hide it for a specific component, you can do so using class styles:

import { makeStyles } from '@material-ui/core/styles'

....
const useStyles = makeStyles({
  hideBorder: {
    '&.MuiExpansionPanel-root:before': {
      display: 'none',
    },
  },
})

....
const classes = useStyles()

.....
<ExpansionPanel className={classes.hideBorder}>

Answer №3

I found that this code snippet worked for me in mui 5.11:

<Accordion elevation={0} sx={{ '&:before':{height:'0px'}}}>

Answer №4

Make changes to the styling of the expansion-panel class (specifically the box shadow, not the border)

.expansion-panel {
    -webkit-box-shadow: none;
    -moz-box-shadow: none;
    box-shadow: none;
}

https://i.sstatic.net/0DmZX.png

Answer №5

This code snippet is compatible with version @mui/material 5.1.0:

MuiAccordion: {
 styleOverrides: {
  root: {
    "&:before": {
      backgroundColor: "transparent",
    },
  },
 },
},

Answer №6

This worked well for me with @mui/material: ^5.8.7

I defined a custom style like so

const CustomStyle = {
  '&:before': {
    backgroundColor: 'transparent !important',
  },
};

and then applied the style using sx

<CustomComponent sx={CustomStyle}>
</CustomComponent>

Answer №7

This method did the trick for me @mui/material: ^5.11.12

Assign a CSS class of mat-elevation-z0 to the mat-expansion-panel

You may have to adjust your background colors, but this step will eliminate the border shadow effect

<mat-accordion>
 <mat-expansion-panel class="mat-elevation-z0" (opened)="panelOpenState = true"
                   (closed)="panelOpenState = false">

   <mat-expansion-panel-header>

     <mat-panel-title>
       <span class="right">Filter</span>
     </mat-panel-title>

   </mat-expansion-panel-header>

   <p><app-data></app-data></p>

 </mat-expansion-panel>
</mat-accordion>

Answer №8

outline: 'none'

I found this solution very useful.

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