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

The shape CSS media feature can be used to test the shape of the device to distinguish rectangular and round displays.


The shape discrete feature is specified as one of two acceptable strings, either rect representing a rectangular screen or round representing a circular, oval or elliptical screen.


The shape is an axis aligned rectangle or square, or a similar shape such as rounded rectangle for which the traditional designs are appropriate.


The shape is rounded or a similar shape to the circle such as an oval, an ellipse for which distinctively rounded designs are appropriate.


Basic example


<h1>Hello World!</h1>


h1 {
  text-align: left;

@media (shape: rect) {
  h1 {
    text-align: left;

@media (shape: round) {
  h1 {
    text-align: center;

Custom stylesheet

This HTML will apply a special stylesheet for devices that have round screens.

    <link rel="stylesheet" href="default.css" />
    <link media="screen and (shape: rect)" rel="stylesheet" href="rectangle.css" />
    <link media="screen and (shape: round)" rel="stylesheet" href="round.css" />


CSS Round Display Level 1
# shape-media-feature

Browser compatibility

There is no browser implementing this feature.

See also