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CSS border Property

The border property is a shorthand that sets the following properties in a single declaration:

CSS Demo: border

border: 2px solid black;
border: dashed red;
border: thick double #4285f4;
border: 4mm ridge rgb(170, 50, 220);
border: none;
This is a box with a border around it

The border shorthand is especially useful when you want all four borders to be the same. To make them different from each other, you can use the longhand border-width, border-style, and border-color properties, which accept different values for each side.

Technical Details

Default value as each of the properties of the shorthand:
  • border-width: as each of the properties of the shorthand:
    • border-top-width: medium
    • border-right-width: medium
    • border-bottom-width: medium
    • border-left-width: medium
  • border-style: as each of the properties of the shorthand:
    • border-top-style: none
    • border-right-style: none
    • border-bottom-style: none
    • border-left-style: none
  • border-color: as each of the properties of the shorthand:
    • border-top-color: currentcolor
    • border-right-color: currentcolor
    • border-bottom-color: currentcolor
    • border-left-color: currentcolor
Applies to all elements
Inherited no
Computed value as specified
Animatable yes See animatable properties. Demo
Version CSS1
JavaScript syntax object.style.border = "10px inset red" Demo


CSS Syntax:

border: border-width border-style border-color|initial|inherit;

Examples

The following example shows how to use border property:

Run code

Tip: If border-color is omitted, the color applied will be the color of the text.

Browser compatibility

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

Property
border 1 1 3.5 1 4

Property Values

The following table describes the values of border property:

Value Description
border-width Specifies the width of the border
border-style Specifies the style of the border
border-color Specifies the color of the border
initial Sets this property to its default value
inherit Inherits this property from its parent element

See also

CSS Borders tutorial

CSS border-width property

CSS border-style property

CSS border-color property

CSS border-radius property