CSS border Property

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CSS border Property

CSS border property sets an element's border. It is a shorthand property of the following CSS properties.

Example

HTML Online Editor
<!DOCTYPE html> <html lang="en-US"> <head> <style> div{ border: 1px solid red; } </style> </head> <body> <h1>CSS border Property</h1> <div> This is div container. </div> </body> </html>

Syntax

Using CSS

element{ /* border: border-width border-style border-color; */ border: 1px solid red; }

Using Javascript

object.style.border="1px solid red";

Animatable

Yes, border property is animatable. CSS Animatable Properties Reference.

Default Value

Default value for CSS border property is medium none color.

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

Property Value

The following table provides a list of values for CSS border property.

ValueTypeExplanation
border-widthOptionalSpecifies the width of the border.
For example, 1px.
Default value is 'medium'.
border-styleRequiredSpecifies the style of the border.
For example, solid.
Default value is 'none'.
border-colorOptionalSpecifies the color of the border.
For example, red.
Default value is 'black'.

Using JavaScript

In the following example, we will demonstrate how to change the CSS border property of an element using JavaScript.

Example

HTML Online Editor
<!DOCTYPE html> <html lang="en-US"> <head> <style> div{ padding: 10px; margin-bottom: 10px; border: 1px solid red; } </style> </head> <body> <h1>CSS border Property</h1> <div> This is div container. </div> <button onclick="myFunction()">Click Me</button> <script> var x = document.getElementsByTagName("div")[0]; function myFunction(){ x.style.border = "5px dashed blue"; } </script> </body> </html>

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