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daniel r(ooooooh) at jsconf mx 🇲🇽

@danielroe.dev

s/shipping more CSS/shipping less JS/ github.blog/engineering/...

github.blogImproving site performance by shipping more CSSHow we fully migrated github.com away from CSS-in-JS.

Matteo Gabriele

@matteogabriele.npmx.social

CSS Modules?

Andreas Møller

@andreasmoller.dk

It is the year of still haven’t found a good way to scale CSS

daniel r(ooooooh) at jsconf mx 🇲🇽

@danielroe.dev

if only there were a way to say, cascade the styles

27/9/26, 9:37 am0 reposts12 likes

Andreas Møller

@andreasmoller.dk

I should probably write a longer post about this, but the 300 char limit version is: there are many great things about the cascade, but it is also the main reason why CSS is hard to scale.

Joe Pea

@joe.trusktr.io

Do custom elements help?

Andreas Møller

@andreasmoller.dk

Not really no. Scoping is nice in theory, but then you are either giving up SSR or duplicating a lot of style tags.

Joe Pea

@joe.trusktr.io

That was a pain point, but native web has always been a pain point that catches up to userland. Now we have Declarative Shadow DOM (developer.mozilla.org/en-US/docs/W...) and <link rel="stylesheet"> to allow people to SSR custom elements with shared styles without increasing HTML payload size.

developer.mozilla.orgdeveloper.mozilla.org