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css property

`margin-right` CSS property

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The margin-right CSS property sets the margin area on the right side of an element. A positive value places it farther from its neighbors, while a negative value places it closer.

Interactive exampleOpen the canonical MDN source to run this embedded demo.
margin-right: 1em;

margin-right: 10%;

margin-right: 10px;

margin-right: 0;

<section id="default-example">
  <div id="container">
    <div class="col"></div>
    <div class="col transition-all" id="example-element"></div>
    <div class="col"></div>
  </div>
</section>

#container {
  width: 300px;
  height: 200px;
  display: flex;
  align-content: flex-start;
  justify-content: flex-start;
}

.col {
  width: 33.33%;
  border: solid #5b6dcd 10px;
  background-color: rgb(229 232 252 / 0.6);
  flex-shrink: 0;
}

#example-element {
  border: solid 10px #ffc129;
  background-color: rgb(255 244 219 / 0.6);
}

The vertical margins of two adjacent boxes may fuse. This is called margin collapsing.

Syntax

/* <length> values */
margin-right: 20px; /* An absolute length */
margin-right: 1em; /* relative to the text size */
margin-right: 5%; /* relative to the nearest block container's width */
margin-right: anchor-size(self-block);
margin-right: calc(anchor-size(--my-anchor height, 20px) / 4);

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

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

The margin-right property is specified as the keyword auto, or a <length>, or a <percentage>. Its value can be positive, zero, or negative.

Values

  • &lt;length&gt;

  • &lt;percentage&gt;

    • : The size of the margin as a percentage, relative to the inline size (width in a horizontal language, defined by writing-mode) of the containing block.

  • auto

    • : The right margin receives a share of the unused horizontal space, as determined mainly by the layout mode that is used. If the values of margin-left and margin-right are both auto, the calculated space is evenly distributed. This table summarizes the different cases:

      Value of [`display`](/firefox/mdn/css/reference/properties/display/) Value of [`float`](/firefox/mdn/css/reference/properties/float/) Value of [`position`](/firefox/mdn/css/reference/properties/position/) Computed value of auto Comment
      inline, inline-block, inline-table any static or relative 0 Inline layout mode
      block, inline, inline-block, block, table, inline-table, list-item, table-caption any static or relative 0, except if both margin-left and margin-right are set to auto. In this case, it is set to the value centering the element inside its parent. Block layout mode
      block, inline, inline-block, block, table, inline-table, list-item, table-caption left or right static or relative 0 Block layout mode (floating element)
      any table-*, except table-caption any any 0 Internal table-* elements don't have margins, use [`border-spacing`](/firefox/mdn/css/reference/properties/border-spacing/) instead
      any, except flex, inline-flex, or table-* any fixed or absolute 0, except if both margin-left and margin-right are set to auto. In this case, it is set to the value centering the border area inside the available width, if fixed. Absolutely positioned layout mode
      flex, inline-flex any any 0, except if there is any positive horizontal free space. In this case, it is evenly distributed to all horizontal auto margins. Flexbox layout mode

Formal definition

Formal syntax

Examples

Setting right margin using pixels and percentages

.content {
  margin-right: 5%;
}
.side-box {
  margin-right: 10px;
}
.logo {
  margin-right: -5px;
}

Specifications

SpecificationsStandards references are available on the canonical MDN page.

Browser compatibility

Browser compatibilityCompatibility data is available on the canonical MDN page.

See also