CSS Hell

April 24, 2025

Text-based interface titled "css hell" showing a grid of 15 outlined boxes labeled with level numbers. The first box reads "#1 round peg, round hole" and is highlighted; the others are labeled with "???" indicating locked or unknown levels. A "show intro again" link appears at the top left.

Hello, and welcome to CSS Hell, where you will be subjected to 15 unimaginably torturous CSS puzzles. “What did I do to deserve this?”, you ask. But you know perfectly well: you blashpemized Cascading Style Sheets. I saw that time your friends were complaining about CSS and you piled on with “CSS isn’t even a real programming language”. It is. I saw you upvote that Reddit meme about vertically aligning a div. Just use a flexbox. I saw you chuckle sensibly at those CSS Is Awesome designs. I couldn’t stand to let Håkon Wium Lie’s divine creation be slandered in this way, so I decided to show the nonbelievers like you the wrath of CSS’s unhinged power.

Source: CSS Hell

So you think you know CSS–think again.