title: how to add version number to css if the css was imported?
body: <p>let's say i have this css file named imported.css, then inside the imported.css file, all the css used in the site are dumped within, e.g</p>
  
  <pre><code>@import url('a.css');
  @import url('b.css');
  @import url('c.css');
  @import url('d.css');
  @import url('e.css');
  @import url('f.css');
  </code></pre>
  
  <p>so the import.css file is being called in the main layout...now the problem is, am having problem with css being cache at the end users' browsers..how will i add the version number to those css inside the import.css file ?.. will e.g </p>
  
  <pre><code>@import url('a.css?v=1');
  </code></pre>
  
  <p>work ?</p>
  
  <p>or should i just add the version number at the import.css?v=1 ?</p>