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CSS border-left-width property

The border-left-width property in CSS is identified to set the width of the left border of a specific element. The line-width property determines the width of the border, either as a keyword or an explicit nonnegative length. In case it is a keyword, then it must be any of these values such as thin, medium, or thick.

Syntax for border-left-width property

Following is the syntax for the border-left-width property.

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

Example: CSS border-left-width property

Here in the example below, we are using the border-left-width property with different border widths, styles, colors, and their different values. In this case, we have given different types of values for the border-left-width property. This means that there will be a left border in the specified width according to the specified colors.

<!DOCTYPE html>
<html>

<head>
	<title>Border-left-width property in CSS</title>
	<style type="text/css">
		div {
		  border: 1px solid red;
		  margin: 1em 0;
		}
		
		div:nth-child(1) {
		  border-left-width: thick;
		}
		div:nth-child(2) {
		  border-left-width: 2em;
		}
	</style>
</head>

<body>
	<div>Border with a thick value</div>
	<div>Border with a length value</div>
</body>

</html>

Output:

Example 2: CSS border-left-width property

Here in the example below, we are using the border-left-width property with different border widths, styles, colors and their different values. In this case, we have given the value for the border-left-width property as none. This means that there will be no left border of the container.

<!DOCTYPE html>
<html>

<head>
	<title>Border-left-width property in CSS</title>
	<style type="text/css">
		div {
		  border: 1px solid green;
		  margin: 1em 0;
		}
		
		div:nth-child(1) {
		  border-left-width: 2ex;
		}
		div:nth-child(2) {
		  border-left-width: none;
		}
	</style>
</head>

<body>
	<div>Border with a length value</div>
	<div>Border with a 'none' value</div>
</body>

</html>

Output:

Browser Compatibility

There are many browsers which do not support all the latest CSS properties. Hence, while developing any webpage, if you are using any CSS property you must check the browser compatibility for that CSS property and then use it. It is of immense importance today when there is a large variety of web browsers available.

Name of Browser Background size contain and cover
Chrome 1 1
Edge 12 12
Firefox 1 1
Internet Explorer 4 4
Opera 3.5 3.5
Safari 1 1
Webview Android 2.3 2.3
Chrome Android 18 18
Firefox Android 14 14
Opera Android 10.1 10.1
IOS Safari 1 1
Samsung Internet 1.0 1.0

Conclusion

The initial value for the border-left-width property is medium. This property is applicable to all elements. It is also applicable to the ::first-letter. It is not an inherited property. The computed value for this property is the absolute length or zero in case the border-left-style is hidden or none. The animation type for this property is a length.