You can use any other selector like CSS element ( Attributes tags like alt, title, or href) or HTML (H1 or p ) elements for the card heading & CTA button. Still, if you facing difficulties in identifying selectors use the inspect and, and you can send the hit in 2 ways & store it with some other evar values to classifications. Methods.1. custom tracking( s.tl() method ) & it creates an additional server call, 2. you can send it by next page view call( s.t() method ) without any additional server call.
Sample selector screenshot for your reference.
