The margin-block-end CSS property defines the logical block end margin of an element, which maps to a physical margin depending on the element's writing mode, directionality, and text orientation.

Try it


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

/* Keyword values */
margin-block-end: auto;

/* Global values */
margin-block-end: inherit;
margin-block-end: initial;
margin-block-end: revert;
margin-block-end: revert-layer;
margin-block-end: unset;

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.

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


The margin-block-end property takes the same values as the margin-left property.

Formal definition

Initial value 0
Applies to same as margin
Inherited no
Percentages depends on layout model
Computed value if specified as a length, the corresponding absolute length; if specified as a percentage, the specified value; otherwise, auto
Animation type a length

Formal syntax

margin-block-end = 


Setting block end margin


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


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

.exampleText {
  writing-mode: vertical-rl;
  margin-block-end: 20px;
  background-color: #c8c800;



Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
margin-block-end 87 87 41 No 73 12.1 87 87 41 62 12.2 14.0

See also

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