How do I create a button in a Markdown?

I am trying to add "no-follow" links to our shop, and blogs. In our shop, for instance, I would like to have a button that says: "buy now" but I would like the link to be no-follow. The only way I've found I'm able to add no-follow links is by adding them in a markdown. I'm wondering if it would be possible to create a button either in the Markdown or the Code content clocks that could be no-follow. This is one of the pages I'd like to do this: https://www.heartwoodcustomvans.com/shop-van-conversion-build-tools

Thank you for your help.

Yes. You can add to Code Block or Markdown, then use CSS to change it to button.

Or if you have already button, you can use JavaScript to add nofollow to button.

It's sad but true that Squarespace does not make it easy to add a no follow link.  I had to open an account with a different website provider to create my no follow links.  I simply copy my text, to the other site's page builder and paste it there.  Then with a click of a couple of buttons, I can change an entire page filled with follow links to No-follow. 

Then I copy the entire html text into Markdown.  It retains my formatting and everything.  But it's an absolute pain.  I've written to square space a number of times about this.  But it has never really been addressed.  Most of the reps I've spoken to have no idea what a no-follow link is.  So odd, since too many "do-follow" links are not good for SEO.