This is a wonderful interactive explanation of the way CSS hierarchy works—beautiful!
Wednesday, January 22nd, 2020
Thursday, December 5th, 2019
JS is also global by default. We use IIFEs and wrapper functions to add scope.
Monday, June 10th, 2019
This post absolutely nails what’s special about CSS …and why supersmart programmers might have trouble wrapping their head around it:
Other programming languages often work in controlled environments, like servers. They expect certain conditions to be true at all times, and can therefore be understood as concrete instructions as to how a program should execute.
CSS on the other hand works in a place that can never be fully controlled, so it has to be flexible by default.
Max goes on to encapsulate years of valuable CSS learnings into some short and snappy pieces of advices:
No matter what your level of CSS knowledge, this post has something for you—highly recommended!
Saturday, November 17th, 2018
I had to read through this twice, but I think I get it now (I’m not the sharpest knife in the drawer). Very useful if you’re doing theming in CSS.
Tuesday, August 21st, 2018
In defence of the cascade (especially now that we’ve got CSS custom properties).
I think embracing CSS’s cascade can be a great way to encourage consistency and simplicity in UIs. Rather than every new component being a free for all, it trains both designers and developers to think in terms of aligning with and re-using what they already have.
Remember, every time you set a property in CSS you are in fact overriding something (even if it’s just the default user agent styles). In other words, CSS code is mostly expressing exceptions to a default design.
Tuesday, June 12th, 2018
This is really good breakdown of what’s different about CSS (compared to other languages).
These differences may feel foreign, but it’s these differences that make CSS so powerful. And it’s my suspicion that developers who embrace these things, and have fully internalized them, tend to be far more proficient in CSS.
Wednesday, November 23rd, 2016
A really terrific piece by Heydon that serves as a rousing defence of the cascade in CSS. It’s set up in opposition to methodologies like BEM (and there’s plenty of back’n’forth in the comments), but the truth is that every project is different so the more approaches you have in your toolkit, the better. For many projects, something like BEM is a good idea. For others, not so much.
Funnily enough, I’ve been working something recently where I’ve been embracing the approach that Heydon describes—although, to be fair, it’s a personal project where I don’t have to think about other developers touching the HTML or CSS.
Wednesday, April 27th, 2016
The greatest form ever made.