title: Supplementing box-shadow from parent CSS class
body: <p>Twitter Bootstrap defines a box-shadow. I'd like to define an inset box shadow, but keep the box-shadow from Bootstrap.</p>
  
  <p>Something like this:</p>
  
  <p><code>bootstrap.css</code></p>
  
  <pre><code>box-shadow: outer shadow
  </code></pre>
  
  <p>Then in my own CSS file</p>
  
  <p><code>login.css</code></p>
  
  <pre><code>box-shadow: inset 0px 3px 0 0 ...
  </code></pre>
  
  <p>Is there a way I can have both apply to an element, without having to redefine the Bootstrap shadow in my login.css file?</p>