margin-bottom property CSS Reference

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Definition and Usage

The margin-bottom CSS property of an element sets the margin space required on the bottom of an element. A negative value is also allowed.

This property has no effect on non-replaced inline elements, like <tt> or <span>.

• Initial 0
• Applies to all elements except elements with table display types other than table-caption, table and inline-table
• Inherited no
• Percentages refer to the width of the containing block
• Media visual
• Computed Value the percentage as specified or the absolute length
• Animatable yes, as a length
• Canonical order the unique non-ambiguous order defined by the formal grammar

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Syntax

Formal syntax: <length> | <percentage> | auto

margin-bottom: 10px;        /* An absolute length */
margin-bottom: 1em;         /* A length relative to the text size */
margin-bottom: 5%;          /* A margin relative to the nearest block container's width */
margin-bottom: auto;
margin-bottom: inherit;

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Values

<length>

Specifies a fixed width. See <length> for possible values.

<percentage>

A <percentage> always relative to the width of the containing block.

auto

See margin.

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Examples

.content { margin-bottom:   5%; }
.sidebox { margin-bottom: 10px; }
.logo    { margin-bottom: -5px; }
#header  { margin-bottom:  1em; }

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Compatibility

Desktop browsers

Mobile browsers