No exit point for registration confirmation

The account sign up page does not utilize submit rules, only display rules and record rules.  Once the registration form is submitted, the user is directed to a confirmation page that displays the message "Your registration is complete! Click the back link to log in."  Only problem is there is no "back link" and clicking the browser back button has no response.  The user has no choice but to close the browser.

There doesn't appear to be any way to edit the confirmation page. Perhaps I'm missing something?  Any help would be appreciated.

Update. Problem was due to suppressing the bottom breadcrumb trail in CSS section.