Style marginBottom attribute

Definition and usage

marginBottom property sets or returns the bottom outside margin of an element.

margin property and padding property They both 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:CSS Εξωτερικό Μέγεθος

CSS Reference Manual:margin-bottom property

HTML DOM Reference Manual:margin property

Instance

Example 1

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

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

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Example 2

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

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

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Example 3

Return the bottom outside margin 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"

Property value

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

Technical details

Default value: 0
Return value: A string representing the bottom outside margin of an element.
CSS version: CSS1

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