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Definition and usage

marginBottom property sets or returns the element's outer margin bottom.

margin property and padding property All insert space around the element. However, the difference is that margin inserts space around the border, while padding inserts space inside the element's border.

See also:

CSS Tutorial:Ukijua wa CSS wa kifungu

CSS Reference Manual:margin-bottom property

HTML DOM Reference Manual:margin property

Instance

Example 1

Set the outer margin bottom of the <div> element:

document.getElementById("myDiv").style.marginBottom = "50px";

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Example 2

Change the outer margin bottom of the <div> element back to "normal":

document.getElementById("myDiv").style.marginBottom = "0px";

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Example 3

Return the outer margin bottom of the <div> element:

alert(document.getElementById("myDiv").style.marginBottom);

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Example 4

Difference between marginBottom and paddingBottom:

function changeMargin() {
  document.getElementById("myDiv").style.marginBottom = "100px";
}
function changePadding() {
  document.getElementById("myDiv2").style.paddingBottom = "100px";
}

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Syntax

Return marginBottom property:

object.style.marginBottom

Set marginBottom property:

object.style.marginBottom = "%|length|auto|initial|inherit"

Attribute value

Value Description
% Define the outer margin bottom as a percentage of the parent element's width.
length Define the outer margin bottom with a length unit.
auto Browser settings for the outer margin bottom.
initial Sets this property to its default value. See also initial.
inherit Inherits this property from its parent element. See also inherit.

Technical details

Default value: 0
Return value: String that represents the element's outer margin bottom.
CSS Version: CSS1

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