title: Show only right and bottom parts of a shadow
body: <p>How to show only <code>right</code> and <code>bottom</code> parts of a shadow?</p>
  
  <p>I know <code>box-shadow</code> can set a bottom. but how to set in <code>-webkit-box-shadow</code> and <code>-moz-box-shadow</code>? </p>
  
  <p><code>box-shadow-bottom: 0px 4px 4px black;</code></p>