title: How do I specify partial file paths in css so I can change file locations in just one place
body: <p>I'm sort of new to HTML and I  have the code:  </p>
  
  <pre><code>&lt;video controls loop  id=hgt autoplay&gt;
    &lt;source src="Covers/Cover 1.mp4" type="video/mp4"&gt;
  &lt;/video&gt;
  </code></pre>
  
  <p>I need to be able to substitute the partial file path "Covers" so I don't have to change every pathname reference in my code every time I move files around on my system. </p>