sorry if this question has been asked before, my friend asked me to do this sort of fieldset for their website.

screenshot in this link

![custom fieldset border](https://i.stack.imgur.com/U5rnQ.png)

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 "Aim to preserve" text.

Help would be highly appreciated.

Regards,