CSS Properties: How to specify a thick left border?

Go to Exercise page


HTML Code:

<!DOCTYPE html><!-- Declaration of HTML5 document type -->
<title>How to specify a thick 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: thick; /* Sets the width of the left border for h1 elements to a thick size */
<p>w3resource Tutorial</p><!-- Paragraph content -->
<h1>border left width thick</h1><!-- h1 element with a left border of thick width -->


  • This HTML document demonstrates how to set the width of the left border for an h1 element to a thick size.
  • The h1 elements have a common style with a solid border, and the width of the left border is set to the thick size.
  • The rendered h1 element will have a left border with a width that is typically interpreted by browsers as being thick.

Live Demo:

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

See the solution in the browser

Supported browser

Firefox logo Chrome logo Opera logo Safari logo Internet Explorer logo
Yes Yes Yes Yes Yes

Go to Exercise page

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.

Follow us on Facebook and Twitter for latest update.