What are some key considerations when incorporating HTML/CSS styling within PHP output?

When incorporating HTML/CSS styling within PHP output, it's important to properly structure your code to maintain readability and organization. One key consideration is to separate your PHP logic from your HTML/CSS styling by using a templating system or maintaining a clear separation of concerns. Additionally, make use of PHP's echo or print functions to output dynamic content within your HTML elements.

<?php
// PHP logic to retrieve data
$data = "Hello, World!";

// Output HTML/CSS styling with dynamic content
echo "<div style='color: blue; font-size: 20px;'>" . $data . "</div>";
?>