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

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-top, margin-right, margin-bottom, or margin-left property depending on the values defined for writing-mode, direction, and text-orientation.

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

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

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

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

Initial value 0
Applies to same as margin
Inherited no
Percentages depends on layout model
Media visual
Computed value if specified as a length, the corresponding absolute length; if specified as a percentage, the specified value; otherwise, auto
Animation type discrete
Canonical order the unique non-ambiguous order defined by the formal grammar



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;


Browser compatibility

Feature Chrome Edge Firefox Internet Explorer Opera Safari
Basic support 21 ?



38 — 513

No ? 31
Feature Android webview Chrome for Android Edge mobile Firefox for Android IE mobile Opera Android iOS Safari
Basic support Yes ? ?



38 — 513

No ? ?

1. Supported as -webkit-padding-start.

2. Supported as -moz-padding-start.

3. From version 38 until version 51 (exclusive): this feature is behind the layout.css.vertical-text.enabled preference (needs to be set to true). To change preferences in Firefox, visit about:config.

See also

© 2005–2018 Mozilla Developer Network and individual contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.