Firefox 155.0 • Hacker News Board

Re: Firefox 155.0

#11

Post by Klonoar » Tue, Sep 01, 2026, 9:45 PM UTC

mcookly wrote: post #8

microflash wrote: post #3

> Firefox now limits CSS to 75 levels of nested blocks and functions, preventing crashes that extremely deep nesting can cause under some circumstances. More deeply nested rules and values no longer parse. Very interesting change. I’ve yet to see CSS more than 20 levels deep. Good to put a stop to such insanity.

> Very interesting change. I’ve yet to see CSS more than 20 levels deep. Good to put a stop to such insanity. I wonder what made them attempt to support such deep nesting in the first place.

Always possible there’s some buggy CSS compiler in the wild that ships a crazy rule and nobody tested in Firefox.

Re: Firefox 155.0

#12

Post by thejazzman » Wed, Sep 02, 2026, 6:36 PM UTC

mcookly wrote: post #6

thejazzman wrote: post #5

I recently had to install Firefox and windows so I could throughly test something Holy Hell is the praise for this product misplaced. Maybe if you installed it long enough ago it preserves your choices and hides the garbage? It’s like modern website full of pop up ads and garbage. There’s like 10 different scammy things in your face you have to figure out how to hide or disable I’d pick Edge, if I had to pick either,…

> I’d pick Edge, if I had to pick either, after this experience Doesn't Edge have the same problem?

Probably. But my expectations for Firefox were much much higher, so the disappointment / surprise factor here is what’s so big for me, I guess

Re: Firefox 155.0

#13

Post by FlameWolf » Fri, Sep 04, 2026, 4:43 AM UTC

All the web platform changes are really cool:

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> The CSS attr() function now supports values of any type, so authors can use attribute values in any property rather than only as strings in the content property.

> Firefox now supports the progress() CSS function.

> Firefox now supports the alpha() CSS function. This is a relative color function that can be used to modify just the alpha component of a given color.

> Firefox now supports the Promise.allKeyed and Promise.allSettledKeyed methods from the await dictionary proposal, which take an object of promises and resolve to an object of results with the same keys.

... And so on.