How can the use of CSS for formatting in PHP output help in identifying and resolving display issues?

When using PHP to generate output, formatting can sometimes be inconsistent or problematic across different browsers or devices. By using CSS to style the PHP output, you can ensure a consistent and visually appealing display. This can help in identifying and resolving display issues by providing a clear separation between content and presentation, making it easier to pinpoint and address any styling problems.

<?php
echo "<div style='color: blue; font-size: 16px;'>Hello, world!</div>";
?>