CSS Properties: How to define the thickness of the left border?

Last update on February 19 2024 13:02:15 (UTC/GMT +8 hours)

Solution:

HTML Code:

<!DOCTYPE html><!-- Declaration of HTML5 document type -->
<html>
<head>
<title>How to define the thickness of the left border</title><!-- Title of the HTML document -->
<style type="text/css">
/* CSS styling */
h1  {
border-style: solid; /* Sets the border style for h1 elements to solid */
border-left-width: 20px; /* Sets the width of the left border for h1 elements to 20 pixels */
}
</style>
</head>
<body>
<p>w3resource Tutorial</p><!-- Paragraph content -->
<h1>border left width thickness</h1><!-- h1 element with a left border of 20 pixels in thickness -->
</body>
</html>

Explanation:

This HTML document demonstrates how to specify the thickness of the left border for an h1 element.
The h1 elements have a common style with a solid border, and the width of the left border is set to 20 pixels.
As a result, the rendered h1 element will have a left border with a thickness of 20 pixels.

Live Demo:

See the Pen border-left-width-length-answer by w3resource (@w3resource) on CodePen.

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