in the past (until 2010) wordpress images were shown in a thickbox when linked and clicked in a post.
Now images are shown in a modal full screen overlay (I think this is called lightbox).
The reader is forced to use the back-button to leave the overlay (lightbox). I use the full screen overlay to show diagrams (.png) which are hard to read in a small size (e. g. https://rechtsanwalt-und-sozialrecht.de/hartz-iv-statistische-daten/).
Is it possible to add a close button in the overlay or to leave the full screen overlay by clicking into the image or outside the image (instead triggering the zoom-function)? What have I got to do?
Thanks for help!