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CSS Properties: How to set the width of the top border?

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Solution:

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 set the width of the top border</title><!-- Sets the title of the HTML document -->
<style type="text/css"> /* Begins a CSS style block */
h1.xyz {
  /* Defines a CSS rule for h1 elements with class "xyz" */
  border-style: solid; /* Sets the border style to solid */
  border-width: 10px; /* Sets the border width to 10 pixels */
}
</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="xyz">w3resource Tutorial</h1><!-- Displays an h1 element with class "xyz" -->
<p><b>Note:</b> The default value is medium none color.</p><!-- Displays a note about the default border width -->
</body><!-- Ends the body section of the HTML document -->
</html><!-- Ends the HTML document -->

Explanation:

  • The HTML document structure includes essential elements such as html, head, title, style, and body.
  • CSS rules are defined to set the border style to solid and the border width to 10 pixels for h1 elements with class "xyz".
  • A note is provided in the content explaining that the default value for the top border width is medium, with no border color.
  • Comments were added below the code line as requested.

Live Demo:

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


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https://www.w3resource.com/html-css-exercise/css-properties/border-top-width-answer.php