title: Underline single letter in an input placeholder
body: <p>One can apply CSS styling to a placeholder, such as for Firefox:</p>
  
  <pre><code>::-moz-placeholder { text-decoration: underline; }
  </code></pre>
  
  <p>However, what I would like to do is underline a single letter in a placeholder, for the purpose of hinting at a hotkey for the user to press (similar to Windows in file menus), such as making the <code>F</code>  in <code>First Name</code> underlined below:</p>
  
  <pre><code>&lt;input type='text' placeholder='First Name' /&gt;
  </code></pre>
  
  <p>Is there any way to do this?</p>