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corner-bottom-shape

The corner-bottom-shape CSS property specifies the shape of both the corners on a box's bottom edge, within their border-radius area.

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

Constituent properties

The corner-bottom-shape property is a shorthand for the following physical properties:

Syntax

/* Single keyword value set for both corners */
corner-bottom-shape: scoop;
corner-bottom-shape: square;

/* Single superellipse() value set for both corners */
corner-bottom-shape: superellipse(0.7);
corner-bottom-shape: superellipse(-2.8);

/* Left-hand corner, right-hand corner */
corner-bottom-shape: scoop square;
corner-bottom-shape: scoop superellipse(0.7);

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

Values

The corner-bottom-shape property is specified using one or two <corner-shape-value> values:

  • If one value is used, it specifies the shape of both bottom corners.
  • If two values are used, the first one specifies the shape of the bottom-left corner, and the second one specifies the shape of the bottom-right corner.

Formal definition

Value not found in DB!

Formal syntax

corner-bottom-shape = 
  <'corner-top-left-shape'>{1,2}  

<corner-top-left-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-bottom-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 60px 30px 20% 40%, and a corner-bottom-shape of square squircle.

div {
  box-shadow: 1px 1px 3px gray;
  border-radius: 60px 30px 20% 40%;
  corner-bottom-shape: square squircle;
}

Result

The rendered result looks like this:

Specifications

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