Html
<html>
<body>
<link rel="stylesheet" type="text/css" href="/text.css" />
<font class="big_font">Hello!</font>
</body>
</html>
Browsers Chrome and Opera cache files css.
To make the web page load the latest updated file css you need to put a version of the file when downloading css .
<link rel="stylesheet" type="text/css" href="/text.css?version=2" />
And each time you increment the version number when you make changes to the file css.
<link rel="stylesheet" type="text/css" href="/text.css?version=3" />
Example
Html
<html>
<body>
<link rel="stylesheet" type="text/css" href="/text.css?version=2" />
<font class="big_font">Hello!</font>
</body>
</html>