title: HTML display an icon as submit button
body: <p>I'm making a project for school, but I'm stuck on this problem:
  I want an input submit, but instead of the button I want an icon to click on.
  I have not figured it out yet after searching for other answers.</p>
  
  <pre><code>&lt;form&gt;
      &lt;input type="submit" id="submit-icon"&gt;
  &lt;/form&gt;
  </code></pre>