title: why isn't my background-image url working (CSS)?
body: <p>Here is my (relevant) css code:</p>
  <pre><code>li a {
    display: block;
    font-weight:bolder;
    color: #000;
    padding: 8px 16px;
    text-decoration: none;
    background-image: url('004.jpg')
  }
  
  /* Change the link color on hover */
  li a:hover {
    background-color: #555;
    color: white;
  }
  </code></pre>
  <p>I've tried the URL with double quotes, single quotes, and no quotes and it still isn't working. Can someone help me with this?</p>
  <p>Thanks so much for your wise advice.</p>