CSS Properties: How to specify a 3D outset top border?

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HTML Code:

<!DOCTYPE html><!-- Declares the document type as HTML -->
<html><!-- Root element of the HTML document -->
<head><!-- Contains metadata about the HTML document -->
<title>How to specify a 3D outset top border</title><!-- Sets the title of the HTML document -->
<style type="text/css"> /* Begins a CSS style block */
h1 {
  border-style: solid; /* Defines a default CSS rule for h1 elements to have a solid border style */
  border-width: 10px; /* Sets the border width of h1 elements to 10 pixels */
h1.abc {
  border-top-style: outset; /* Sets the top border style of h1 elements with class "abc" to outset */
  border-top-color: #22CF64; /* Sets the color of the top border of h1 elements with class "abc" */
</style><!-- Ends the CSS style block -->
</head><!-- Ends the head section of the HTML document -->
<body><!-- Contains the content of the HTML document -->
<h1 class="abc">Outset top border style</h1><!-- Displays an h1 element with an outset top border style -->
</body><!-- Ends the body section of the HTML document -->
</html><!-- Ends the HTML document -->


  • The HTML document structure includes essential elements such as html, head, title, style, and body.
  • CSS rules are defined to specify different border styles for h1 elements based on their classes.
  • The .abc class is used to apply an outset top border style to h1 elements and set the top border color to a shade of green.
  • Comments were added below the code line as requested.

Live Demo:

See the Pen border-top-style-outset-answer by w3resource (@w3resource) on CodePen.

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