margin-block - CSS: Cascading Style Sheets 编辑

The margin-block CSS shorthand 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.

/* <length> values */
margin-block: 10px 20px;  /* An absolute length */
margin-block: 1em 2em;   /* relative to the text size */
margin-block: 5% 2%;    /* relative to the nearest block container's width */
margin-block: 10px; /* sets both start and end values */

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

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

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

Constituent properties

This property is a shorthand for the following CSS properties:

• margin-block-end
• margin-block-start

Syntax

Values

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

Formal definition

Formal syntax

<'margin-left'>{1,2}

Examples

Setting block start and end margins

HTML

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

CSS

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

.exampleText {
  writing-mode: vertical-rl;
  margin-block: 20px 40px;
  background-color: #c8c800;
}

Result

Specifications

Browser compatibility

BCD tables only load in the browser

See also

• The mapped physical properties: margin-top, margin-right, margin-bottom, and margin-left
• writing-mode, direction, text-orientation