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CSS border-left Property

The border-left property sets the width, style, and color of the left border of an element.

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

CSS Demo: border-left

border-left: solid;
border-left: dashed red;
border-left: 2rem solid;
border-left: thick double #4285f4;
border-left: 4mm ridge rgb(170,50,220);
This is a box with a border around it

Technical Details

Default value as each of the properties of the shorthand:
  • border-left-width: medium
  • border-left-style: none
  • 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.borderLeft = "5px dashed red" Demo

CSS Syntax:

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


The following example shows how to use border-left property:

Run code

Tip: If border-left-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-left property:

border-left 1 1 3.5 1 4

Property Values

The following table describes the values of border-left property:

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

See also

CSS Borders tutorial

CSS border property

CSS border-bottom property

CSS border-top property

CSS border-right property