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Style bottom Property

Style Object Reference Style Object

Example

Set the bottom position of a <button> element:

document.getElementById("myBtn").style.bottom = "100px";
Try it Yourself »

Definition and Usage

The bottom property sets or returns the bottom position of a positioned element.

This property specifies the bottom position of the element including padding, scrollbar, border and margin.

Tip: A positioned element is an element with the position property set to: relative, absolute, or fixed.

Tip: To set or return the top position of a positioned element, use the top property.


Browser Support

Internet Explorer Firefox Opera Google Chrome Safari

The bottom property is supported in all major browsers.


Syntax

Return the bottom property:

object.style.bottom

Set the bottom property:

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

Property Values

Value Description
auto Lets the browser set the bottom position. This is default
length Defines the bottom position in length units. Negative values are allowed
% Sets the bottom position in % of the height of the parent element
initial Sets this property to its default value. Read about initial
inherit Inherits this property from its parent element. Read about inherit

Technical Details

Default Value: auto
Return Value: A String, representing the bottom position of a positioned element
CSS Version CSS2

More Examples

Example

Set the bottom position of a <div> element:

document.getElementById("myDiv").style.bottom = "10px";
Try it Yourself »

Example

Using negative values - Set the bottom position of a <div> element:

document.getElementById("myDiv").style.bottom = "-100px";
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Example

Return the bottom position of a <div> element:

alert(document.getElementById("myDiv").style.bottom);
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Related Pages

CSS tutorial: CSS Positioning

CSS reference: bottom property


Style Object Reference Style Object