title: How to gray out an html checkbox?
body: <p>I want to make readonly checkbox.  Like this:</p>
  <pre class="lang-html prettyprint-override"><code>&lt;input type=&quot;checkbox&quot; onclick=&quot;return false;&quot;&gt;
  </code></pre>
  <p>I want the checkbox to look like it is disabled or grayed out.</p>
  <p>How can I do this?</p>