Prevent link opening in new tab

Hi, can you guys tell me how to prevent this image link from opening in same page? Neither a new tab.. I would like it to open in a box the user can close (og click behind, so it goes away – is that called a lightbox?) – dont know, hope you understand what I mean 🙂

Please see picture.

Also the link is shown here: https://www.repower.dk/vare/brugt-baerbar/lenovo-thinkpad-x260-125-fhd-i5-8gb-128gb-ssd-4g-brugt-a/