title: How to change the thickness & colour of the <hr> tag?
body: <p>I can see this has been answered but i've tried all of the solutions yet still have a barely visable HR.</p>
  
  <p>What am I doing wrong?</p>
  
  <pre><code>hr {
      background-color: dimgrey;
      color: dimgrey;
      border: solid 2px dimgrey;
      height: 5px;
      width: 1000px;
  }
  </code></pre>