It's pretty awesome, Marko Denic ! I'm loving all your tips posts! Wish I saw something like your 10 Javascript Methods post a long time ago.

Hey, I went and found :target explained on Mozilla and it makes a lot more sense now: You can use the :target pseudo-class to create a lightbox without using any JavaScript. This technique relies on the ability of anchor links to point to elements that are initially hidden on the page. Once targeted, the CSS changes their display so that they are shown. Check out the Pure CSS Lighbox here: https://developer.mozilla.org/en-US/docs/Web/CSS/:target#Pure-CSS_lightbox