Template form breaking password indicator

Hi – I’m having trouble using a custom template for the paypal checkout form and hoping someone can help. I’ve added a fieldset around the username and password fields, but then the password strength indicator stops working. I can see in the source that the js traces the css path, so I figure I’m breaking something in the paypal.js file by adding this fieldset.

I thought this was a fairly straight forward edit that’s gone very wrong. Can someone please point out what I’m doing wrong or how I can fix it?