margin-bottom property

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>.

  • Initial0
  • Applies toall elements except elements with table display types other than table-caption, table and inline-table
  • Inheritedno
  • Percentagesrefer to the width of the containing block
  • Mediavisual
  • Computed Valuethe percentage as specified or the absolute length
  • Animatableyes, as a length
  • Canonical orderthe unique non-ambiguous order defined by the formal grammar

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;

Values

<length>
Specifies a fixed width. See <length> for possible values.
<percentage>
<percentage> always relative to the width of the containing block.
auto
See margin.

Examples

1 .content { margin-bottom:   5%; }
2 .sidebox { margin-bottom10px; }
3 .logo    { margin-bottom-5px; }
4 #header  { margin-bottom:  1em; }

Compatibility

Desktop browsers

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 1.0 1.0 (1.7 or earlier) 3.0 3.5 1.0 (85)
auto value 1.0 1.0 (1.7 or earlier) 6.0 (strict mode) 3.5 1.0 (85)

Mobile browsers

Feature Android Firefox Mobile (Gecko) IE Phone Opera Mobile Safari Mobile
Basic support 1.0 1.0 (1) 6.0 6.0 1.0