This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the specification changes.

The margin-inline-start CSS property defines the logical inline start margin of an element, which maps to a physical margin depending on the element's writing mode, directionality, and text orientation. It corresponds to the margin-topmargin-rightmargin-bottom, or margin-left property depending on the values defined for writing-mode, direction, and text-orientation.

It relates to margin-block-start, margin-block-end, and margin-inline-end, which define the other margins of the element.

Initial value0
Applies tosame as margin
Percentagesdepends on layout model
Computed valueif specified as a length, the corresponding absolute length; if specified as a percentage, the specified value; otherwise, auto
Animation typediscrete
Canonical orderthe unique non-ambiguous order defined by the formal grammar


/* <length> values */
margin-inline-start: 10px;      /* An absolute length */
margin-inline-start: 1em;       /* A length relative to the text size */
margin-inline-start: 5%;        /* A margin relative to the nearest block container's width */

/* Keyword values */
margin-inline-start: auto;

/* Global values */
margin-inline-start: inherit;


The margin-inline-start property takes the same values as the margin-left property.

Formal syntax




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


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

.exampleText {
  writing-mode: vertical-lr;
  margin-inline-start: 20px;
  background-color: #c8c800;


Specification Status Comment
CSS Logical Properties Level 1
The definition of 'margin-inline-start' in that specification.
Editor's Draft Initial definition

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support No support[3] 41.0 (41.0)[1][2] No support No support No support[3]
Feature Android Firefox Mobile (Gecko) IE Phone Opera Mobile Safari Mobile
Basic support No support 41.0 (41.0)[1][2] No support No support No support

[1] Available since Gecko 38, but behind the preference layout.css.vertical-text.enabled, then disabled by default. The preference has been removed in Gecko 51 and this property cannot be disabled since this version.

[2] From Firefox 3, Gecko supports the prefixed -moz-padding-start.

[3] From Chrome 2 and Safari 3, the similar prefixed -webkit-padding-start are supported.

See also

Document Tags and Contributors

 Contributors to this page: teoli, Sheppy, Sebastianz, fscholz, kscarfone
 Last updated by: teoli,