title: Custom border for a fieldset and legend
body: <p>sorry if this question has been asked before, my friend asked me to do this sort of fieldset for their website.</p>
  <p>screenshot in this link</p>
  <p><img src="https://i.stack.imgur.com/U5rnQ.png" alt="custom fieldset border" /></p>
  <p>it looks like a normal one but I'm curious how do I get that little vertical line on the left and the right side of &quot;Aim to preserve&quot; text.</p>
  <p>Help would be highly appreciated.</p>
  <p>Regards,</p>