What are the best practices for separating HTML and CSS in web development?

Separating HTML and CSS in web development is essential for maintaining clean and organized code. One common practice is to use external CSS files to style HTML elements, rather than inline styles. This separation allows for easier maintenance and updates to the styling of a website.

<!DOCTYPE html>
<html>
<head>
    <link rel="stylesheet" type="text/css" href="styles.css">
</head>
<body>
    <div class="container">
        <h1>Welcome to my website</h1>
        <p>This is a paragraph of text.</p>
    </div>
</body>
</html>