How can relative measurements and percentage widths be utilized in PHP to create responsive design elements instead of relying on screen resolution?

To create responsive design elements in PHP without relying on screen resolution, relative measurements like percentages can be used. By setting widths, heights, padding, and margins in percentages, elements will scale proportionally based on the size of their container rather than the screen resolution. This allows for a more flexible and adaptive layout that can adjust to different screen sizes.

<div style="width: 50%; padding: 2%; margin: 1%;">
    <p>This is a responsive design element using PHP with relative measurements.</p>
</div>