CSS Properties: How to specify a thin top border?

Last update on February 20 2024 12:26:10 (UTC/GMT +8 hours)

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 specify a thin 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-top-width: thin; /* Sets the top border width to thin */
}
</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 top border width to thin 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-thin-answer by w3resource (@w3resource) on CodePen.

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