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CSS border-width Property

CSS Reference Complete CSS Reference

Example

Set the width of the four borders:

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

Try it yourself »

Definition and Usage

The border-width property sets the width of an element's four borders. This property can have from one to four values.

Examples:

  • border-width:thin medium thick 10px;
    • top border is thin
    • right border is medium
    • bottom border is thick
    • left border is 10px

  • border-width:thin medium thick;
    • top border is thin
    • right and left borders are medium
    • bottom border is thick

  • border-width:thin medium;
    • top and bottom borders are thin
    • right and left borders are medium

  • border-width:thin;
    • all four borders are thin

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

Default value: medium
Inherited: no
Version: CSS1
JavaScript syntax: object.style.borderWidth="thin thick"


Browser Support

Internet Explorer Firefox Opera Google Chrome Safari

The border-width property is supported in all major browsers.

Note: No versions of Internet Explorer (including IE8) support the property value "inherit".


Property Values

Value Description
thin Specifies a thin border
medium Specifies a medium border. This is default
thick Specifies a thick border
length Allows you to define the thickness of the border
inherit Specifies that the border width should be inherited from the parent element


Related Pages

CSS tutorial: CSS Border

HTML DOM reference: borderWidth property


CSS Reference Complete CSS Reference

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