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corner-start-end-shape

Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The corner-start-end-shape CSS property specifies the shape of a box's block-start and inline-end corner, within its border-radius area.

For a full description of corner shape behavior and multiple examples, see the corner-shape shorthand property page.

Syntax

/* Keyword values */
corner-start-end-shape: square;
corner-start-end-shape: bevel;

/* superellipse() function values */
corner-start-end-shape: superellipse(1.5);
corner-start-end-shape: superellipse(-2.2);

/* Global values */
corner-start-end-shape: inherit;
corner-start-end-shape: initial;
corner-start-end-shape: revert;
corner-start-end-shape: revert-layer;
corner-start-end-shape: unset;

Values

The corner-start-end-shape property is specified using a <corner-shape-value> value.

Formal definition

Value not found in DB!

Formal syntax

corner-start-end-shape = 
  <corner-shape-value>  

<corner-shape-value> = 
  round             |
  scoop             |
  bevel             |
  notch             |
  square            |
  squircle          |
  <superellipse()>  

<superellipse()> = 
  superellipse( <number [-∞,∞]>  |
  infinity                       |
  -infinity )

Examples

You can find other related examples on the corner-shape reference page.

Basic corner-start-end-shape usage

HTML

The markup for this example contains a single <div> element.

<div></div>

CSS

We give the box some basic styles, which we've hidden for brevity. We also apply a box-shadow, a border-radius of 20px 40px 60px 80px, and a corner-start-end-shape of notch.

div {
  box-shadow: 1px 1px 3px gray;
  border-radius: 20px 40px 60px 80px;
  corner-start-end-shape: notch;
}

Result

The rendered result looks like this:

Specifications

Specification
CSS Borders and Box Decorations Module Level 4>
# propdef-corner-start-end-shape>

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Opera Safari Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet WebView Android WebView on iOS
corner-start-end-shape 139 139 No 123 No 139 No 91 No No 139 No

See also

© 2005–2025 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/CSS/corner-start-end-shape