margin-right

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.

{{InteractiveExample("CSS Demo: margin-right")}}

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

{{cssxref("<length>")}}
- : The size of the margin as a fixed value.
  - For anchor-positioned elements, the {{cssxref("anchor-size()")}} function resolves to a {{cssxref("<length>")}} value relative to the associated anchor element’s width or height (see Setting element margin based on anchor size).
{{cssxref("<percentage>")}}
- : The size of the margin as a percentage, relative to the inline size (width in a horizontal language, defined by {{cssxref("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 `{{cssxref("display")}}`	Value of `{{cssxref("float")}}`	Value of `{{cssxref("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 `{{ cssxref("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

{{cssinfo}}

Formal syntax

{{csssyntax}}

Examples

Setting right margin using pixels and percentages

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

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}

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