CSS border-bottom-width Property


Set the width of the bottom border:

p {
    border-style: solid;
    border-bottom-width: 15px;

Try it yourself »

Definition and Usage

The border-bottom-width property sets the width of an element's bottom border.

Note: Always declare the border-style property before the border-bottom-width property. An element must have borders before you can change the width.

Default value: medium
Inherited: no
Animatable: yes. Read about animatable Try it
Version: CSS1
JavaScript syntax: object.style.borderBottomWidth="5px" Try it

Browser Support

The numbers in the table specify the first browser version that fully supports the property.

border-bottom-width 1.0 4.0 1.0 1.0 3.5

CSS Syntax

border-bottom-width: medium|thin|thick|length|initial|inherit;

Property Values

Value Description Play it
medium Specifies a medium bottom border. This is default Play it »
thin Specifies a thin bottom border Play it »
thick Specifies a thick bottom border Play it »
length Allows you to define the thickness of the bottom border Play it »
initial Sets this property to its default value. Read about initial Play it »
inherit Inherits this property from its parent element. Read about inherit

Related Pages

CSS tutorial: CSS Border

CSS reference: border-bottom property

HTML DOM reference: borderBottomWidth property




Search w3schools.com:

Translate w3schools.com: