This is the transcript of a brilliant presentation by Scott—read the whole thing! It starts with a much-needed history lesson that gets to where we are now with the dismal state of performance on the web, and then gives a whole truckload of handy tips and tricks for improving performance when it comes to styles, scripts, images, fonts, and just about everything on the front end.
Essential!
Lynn gives a step-by-step walkthrough of the latest amazing redesign of her website. There’s so much joy and craft in here, with real attention to detail—I love it!
Six steps that everyone can do to catch accessibility gotchas:
- Check image descriptions
- Disable all styles
- Validate HTML
- Check the document outline
- Grayscale mode
- Use the keyboard
A deep dive info focus styles with this conclusion:
The default focus ring works. There are problems with it, but it can be good enough, especially if you can’t dedicate time and energy to create a custom focus ring.
Some very smart ideas in here for resetting default browser styles, like only resetting lists that have classes applied to them:
ul[class],
ol[class] {
padding: 0;
}
I select only lists that do have a
classattribute because if a plain ol’<ul>or<ol>gets used, I want it to look like a list. A lot of resets, including my previous ones, aggressively remove that.
What you see really is what you get. I like this style!
This is such a great excercise for teaching the separation of structure and presentation—I could imagine using something like this at Codebar.
This article by Cassie is so, so good!
First off, there’s the actual practical content on how to change the hover styles of SVGs that aren’t embedded. Then there’s the really clear walkthrough she give, making some quite complex topics very understandable. Finally, there’s the fact that she made tool to illustrate the point!
Best of all, I get to work with the super-smart developer who did all this.
The value you want form a CSS expert is their CSS, not their JavaScript, so it’s absurd to make JavaScript a requirement.
Absolutely spot on! And it cuts both ways:
Put CSS in JS and anyone who wishes to write CSS now has to know JavaScript. Not just JavaScript, but —most likely—the specific ‘flavor’ of JavaScript called React. That’s gatekeeping, first of all, but the worst part is the JavaScript aficionado didn’t want CSS on their plate in the first place.
Harry takes a look at the performance implications of loading CSS. To be clear, this is not about the performance of CSS selectors or ordering (which really doesn’t make any difference at this point), but rather it’s about the different ways of getting rid of as much render-blocking CSS as possible.
…a good rule of thumb to remember is that your page will only render as quickly as your slowest stylesheet.
Every single font-feature-settings value demonstrated in one single page.
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.
This is an interesting tool: mess around with styles on any site inside Chrome’s dev tools, and then hit a button to have the updated styles saved to a URL (a Gist on Github).
A great collection of styled and accessible form elements:
Form controls are necessary in many interfaces, but are often considered annoying, if not downright difficult, to style. Many of the markup patterns presented here can serve as a baseline for building more attractive form controls without having to exclude users who may rely on assistive technology to get things done.
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.
A nice intro to variable fonts.
Good advice on print styles from Rachel. The browser support situation is frustrating; I suspect it’s because the people working on browsers would rather get stuck in on shinier stuff.
Chris takes us on a whirlwind tour of radial gradients in CSS.
Patrick is thinking through a way to implement :focus-visible that’s forwards and backwards compatible.
Everything old is new again—sometimes the age-old technique of using a 1x1 pixel image to log requests is still the only way to get certain metrics.
While tracking pixels are far from a new idea, there are creative ways in which we can use them to collect data useful to developers. Once the data is gathered, we can begin to make much more informed decisions about how we work.