CSS margin-block Property

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p {
  margin: 0;
  margin-block: 20px 40px;
  background-color: tomato;


Hello World!


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

The following CSS properties shorthand of margin-block property:

Default value:0
JavaScript syntax:

Standard Syntax

margin-block: length|auto|%|initial|inherit|revert|revert-layer|unset;

Browser Support


Property Values

The following table describes the values of this property:

Value Description
length Specifies a margin block in px, pt, cm, etc. Default value is 0. Negative values are allowed.
auto The browser calculates a margin block.
%(percentage) Specifies a margin block in percent of the width of the containing element.
initial Sets this property to its default value.
inherit If specified, the associated element takes the computed value of its parent element animation-delay property.
revert Reverts the cascaded value of the property from its current value to the value the property
revert-layer Rollback styles to the ones specified in previous cascade layers.
unset Resets a property to its inherited value if the property naturally inherits from its parent, and to its initial value if not.

Default CSS Property Values

selectors {
  margin-block: 0;
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