bottom (CSS property)

Spec
Inherited Initial Version
No auto CSS2
Browser support (more…)
IE7+ FF1+ SA1.3+ OP9.2+ CH2+
Full Full Full Full Full

Syntax

bottom: { length | percentage | auto | inherit } ;

Description

For absolutely positioned boxes, this property specifies how far the bottom margin edge of the box is offset above the bottom padding edge of its containing block.

For relatively positioned boxes, this property specifies how far the bottom edge of the box is offset above the position it would have had in the normal flow.

If both top and bottom have a value other than auto, bottom is ignored.

Example

This style rule makes the element with ID "logo" generate a relatively positioned box that’s shifted ten pixels upward:

#logo {
  position: relative;
  bottom: 10px;
}

Compatibility

Internet Explorer Firefox Safari Opera Chrome
5.5 6.0 7.0 8.0 1.0 1.5 2.0 3.0 3.5 1.3 2.0 3.1 4.0 9.2 9.5 10.0 2.0
Buggy Buggy Full Full Full Full Full Full Full Full Full Full Full Full Full Full Full

Internet Explorer for Windows versions up to and including 6:

  • compute percentage values on the basis of the height of the parent block, rather than of the containing block
  • are one pixel off when bottom or right are used to specify the position, and the offset is an odd number of pixels
  • don’t support the specification of both the position and the dimensions of an absolutely positioned element using top, right, bottom, and left together; they’ll use the last vertical and horizontal position specified, and need the dimensions to be specified using width and height

Internet Explorer for Windows versions up to and including 7 don’t support the value inherit.

User-contributed notes

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