z-index values, and more importantly, the implications of those choices. 
Our dear friend Robin has a new essay called In Praise of Shadows. Now, before you hop over there looking for nuggets on CSS box shadows, text shadows, and shadow filters… this is not that. It’s an essay …
In “What the heck, z-index??,” Josh Comeau makes the analogy of layer groups in design software like Photoshop or Figma to stacking contexts in CSS. If you’ve got an element in a layer group A in Photoshop that …
Usually, when I see terms like “painting order” or “stacking context” my brain will start to shut off and my eyes will gloss over. Not that my brain doesn’t normally shut off more often than not, but that’s another topic …
A plain-language romp through the trials and tribulations of z-indexby Isabel Brison. On the surface, z-index seems simple. It’s a number and it represents what is on top of what… assuming it is positioned… and assuming it is within …
