Why don't links in codepen work?

< a target="_blank" href=“en.wikipedia.org/?curid=48338”>Butterflies< /a>
This link is working, but leading to https://codepen.io/vladyslavnes/debug/YxeWJq/en.wikipedia.org?curid=48338.
How to deal with it?

You need http:// or https:// in front of your link.

I would recommend you to use sublime text editor, because codepen sometimes give you hard time.