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

/* <length> values */ margin-bottom: 10px;  /* An absolute length */ margin-bottom: 1em;   /* relative to the text size */ margin-bottom: 5%;    /* relative to the nearest block container's width */  /* Keyword values */ margin-bottom: auto;  /* Global values */ margin-bottom: inherit; margin-bottom: initial; margin-bottom: revert; margin-bottom: unset; 

margin-bottom

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

This property has no effect on non-replaced inline elements, such as <span> or <code>.

Syntax

/* <length> values */ margin-bottom: 10px;  /* An absolute length */ margin-bottom: 1em;   /* relative to the text size */ margin-bottom: 5%;    /* relative to the nearest block container's width */  /* Keyword values */ margin-bottom: auto;  /* Global values */ margin-bottom: inherit; margin-bottom: initial; margin-bottom: revert; margin-bottom: unset; 

The margin-bottom 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 browser selects a suitable value to use. See margin.

Formal definition

Initial value	0
Applies to	all elements, except elements with table display types other than table-caption, table and inline-table. It also applies to ::first-letter and ::first-line.
Inherited	no
Percentages	refer to the width of the containing block
Computed value	the percentage as specified or the absolute length
Animation type	a length

Formal syntax

<length> | <percentage> | auto

Examples

Setting positive and negative bottom margins

HTML

<div class="container"> <div class="box0">Box 0</div> <div class="box1">Box 1</div> <div class="box2">Box one's negative margin pulls me up</div> </div> 

CSS

CSS for divs to set margin-bottom and height

.box0 {     margin-bottom:1em;     height:3em; } .box1 {     margin-bottom:-1.5em;     height:4em; } .box2 {     border:1px dashed black;     border-width:1px 0;     margin-bottom:2em; } 

Some definitions for container and divs so margins' effects can be seen more clearly

.container {     background-color:orange;     width:320px;     border:1px solid black; } div {     width:320px;     background-color:gold; } 

Result

Specifications

Specification
CSS Box Model Module Level 3 # margin-physical

See also

margin-top, margin-right, and margin-left and the margin shorthand The mapped logical properties: margin-block-start, margin-block-end, margin-inline-start, and margin-inline-end and the shorthands margin-block and margin-inline

Last modified: Nov 8, 2021, by MDN contributors

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