title: What do numbers next to font resources in Chrome Developer Tools mean?
body: <p><img src="https://i.stack.imgur.com/Rc2wi.png" alt="Red numbers"></p>
  
  <p>What do the numbers mean?</p>
  
  <p>The reason for asking is that the fonts are not rendering correctly using the following CSS:</p>
  
  <pre><code>@font-face {
      font-family: 'letter';
      src: url('../fonts/letter-bold.otf') format('opentype');
      font-weight: bold;
  }
  
  .title {
      font-size: 22pt;
      font-family: letter,Arial,Helvetica,sans-serif;
      font-weight: bold;
  }
  </code></pre>
  
  <p>Not the question here, but you could answer in a comment - is <code>'../fonts/'</code> correct for <code>@font-face</code> to load from a path relative to the css file?</p>