The inset CSS property is a shorthand that corresponds to the top, right, bottom, and/or left properties. It has the same multi-value syntax of the margin shorthand.

While part of the CSS Logical Properties specification, it does not define logical offsets. It defines physical offsets, regardless of the element's writing mode, directionality, and text orientation. 

/* <length> values */
inset: 10px; /* value applied to all edges */
inset: 4px 8px; /* top/bottom left/right */ 
inset: 5px 15px 10px; /* top left/right bottom */
inset: 2.4em 3em 3em 3em; /* top right bottom left */

/* <percentage>s of the width (left/right) or height (top/bottom) of the containing block */
inset: 10% 5% 5% 5%;

/* Keyword value */
inset: auto;

/* Global values */
inset: inherit;
inset: initial;
inset: unset;



The inset property takes the same values as the left property.

Formal definition

Initial valueauto
Applies topositioned elements
Percentageslogical-height of containing block
Computed valuesame as box offsets: top, right, bottom, left properties except that directions are logical
Animation typea length, percentage or calc();

Formal syntax



Setting offsets for an element


  <span class="exampleText">Example text</span>


div {
  background-color: yellow;
  width: 150px;
  height: 120px;
  position: relative;

.exampleText {
  writing-mode: sideways-rl;
  position: absolute;
  inset: 20px 40px 30px 10px;
  background-color: #c8c800;



Specification Status Comment
CSS Logical Properties and Values Level 1
The definition of 'inset' in that specification.
Editor's Draft Initial definition

Browser compatibility

Update compatibility data on GitHub
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
insetChrome No support NoEdge No support NoFirefox Full support 66IE No support NoOpera No support NoSafari No support NoWebView Android No support NoChrome Android No support NoFirefox Android Full support 66Opera Android No support NoSafari iOS No support NoSamsung Internet Android No support No


Full support  
Full support
No support  
No support

See also