How can PHP developers address issues with elements overlapping or not displaying correctly in different browsers?

To address issues with elements overlapping or not displaying correctly in different browsers, PHP developers can use CSS reset or normalize stylesheets to ensure consistent rendering across browsers. They can also use browser-specific CSS hacks or conditional comments to target specific browser issues. Additionally, testing the website on multiple browsers and devices can help identify and fix any layout issues.

<?php
// Example of using a CSS reset stylesheet to address browser compatibility issues
echo '<link rel="stylesheet" type="text/css" href="reset.css">';
?>