Answer

HTML elements that do not have content or a closing tag are treated as void or empty elements.

Among all the elements, most of the elements are defined with an opening tag, followed by content, and then closed using a closing tag.

However, there are some elements that do not include content and a closing tag, like the elements <br>, <hr>, <img>, etc.,

Example

<!DOCTYPE html>
<html>
<head>
</head>
<body>
    <h1>HTML Void Elements</h1>
    <hr>
    <p>Paragraph content <br>goes here.</p>
    <img src="/assets/logo.png" alt="logo">
</body>
</html>

In the above example, the elements <br>, <hr>, and <img> are void elements.