title: How to force a browser to show the latest changes to a CSS file?
body: <p>I made some changes on a CSS file on a PHP site.</p>
  
  <p>The changes do not show up in any browser I test it on until I hold down the <kbd>CTRL</kbd> key and click the browser's <kbd>REFRESH</kbd> button.</p>
  
  <p>This means that most users are not going to seem the changes I made.</p>
  
  <p><strong>How can I force browsers to show the changes to CSS files immediately (without renaming the CSS file)?</strong></p>