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

/* <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 */

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

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

The effect of the CSS margin-right property on the element box

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

Initial value0
Applies toall elements, except elements with table display types other than table-caption, table and inline-table. It also applies to ::first-letter.
Inheritedno
Percentagesrefer to the width of the containing block
Mediavisual
Computed valuethe percentage as specified or the absolute length
Animation typea length
Canonical orderthe unique non-ambiguous order defined by the formal grammar

Syntax

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

<length>
The size of the margin as a fixed value.
<percentage>
The size of the margin as a percentage, relative to the width 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 Value of float Value of 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 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 syntax

<length> | <percentage> | auto

Examples

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

Specifications

Specification Status Comment
CSS Basic Box Model
The definition of 'margin-right' in that specification.
Working Draft No significant change
CSS Transitions
The definition of 'margin-right' in that specification.
Working Draft Defines margin-right as animatable.
CSS Flexible Box Layout Module
The definition of 'margin-right' in that specification.
Candidate Recommendation Defines the behavior of margin-right on flex items.
CSS Level 2 (Revision 1)
The definition of 'margin-right' in that specification.
Recommendation Removes its effect on inline elements.
CSS Level 1
The definition of 'margin-right' in that specification.
Recommendation Initial definition.

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic Support1 (Yes)133.51
auto1 ?1613.51
FeatureAndroidChrome for AndroidEdge mobileFirefox for AndroidIE mobileOpera AndroidiOS Safari
Basic Support1 ? (Yes)4661
auto ? ? ?4 ? ? ?

1. The auto value is not supported in quirks mode.

Document Tags and Contributors

 Last updated by: fscholz,