Tw-fade: pure CSS scroll-driven edge masking

(pete.design)

38 points | by petekp 3 days ago ago

13 comments

  • chrismorgan 32 minutes ago

    The fade affects scroll bars, which is quite unpleasant (and arguably catastrophic if you have two-dimensional scrolling). The traditional background-image technique avoided this by sitting inside the scroll area. I don’t think you can achieve that with mask, without an additional element. But I think it might be worth that extra element.

  • Hugsbox an hour ago

    This is extremely laggy on my computer. It may not be a top-end gaming supercomputer but it's no slouch either.

    • sheept 35 minutes ago

      It might be related to the liquid glass imitation in the color scheme picker

  • maxjustus 37 minutes ago

    I also love the pure CSS parallax effect of the "tw-fade" title shadow using multiple spans with different styles that fade in and out based on scroll position. Very clever!

  • petekp 3 days ago

    hey all, just released a plugin to scratch an itch. i'd been lazily adding linear gradients on the edges of scrollviews and animating them with JS based on scroll position. turns out you can do a lot better with pure CSS now by leveraging masking + the new CSS scroll animations API.

    works in pretty much all browers excepting firefox which doesn't have CSS scroll animations yet, but the nightly version does, so it should be generally available soon.

    demo site: https://pete.design/tw-fade

    github: https://github.com/petekp/tw-fade

    npmjs: https://www.npmjs.com/package/tw-fade

    if you use it i'd love to hear how it goes and if you have any feedback.

  • jstanley 2 hours ago

    FYI scrolling this page is slow as balls on my computer. Firefox on Ubuntu.

    I don't know if this page is a demonstration of your plugin, I'm guessing yes but I can't see any masking going on, it seems to scroll just like a normal page but much more laggy.

    EDIT: Oh I see in your comment now, it doesn't work in Firefox. My mistake.

    • RyanOD 38 minutes ago

      I was wondering the same thing and I'm in Chrome. The "Horizontal" and "Vertical" sections don't seem to do anything, but maybe I'm just not understanding what I should be looking for?

    • rtrigoso 2 hours ago

      This has a frame drop issue on Chrome Version 149.0.7827.156. It isn't close to smooth on my browser.

  • ptak an hour ago

    Neat! I'd much rather just copy-paste the CSS from the site though, would never install something like this as a package.

  • NooneAtAll3 an hour ago

    arrow keys don't work, pgdown doesn't work

    • c-hendricks 31 minutes ago

      I don't think that would be an issue of this CSS, that's just normal `overflow: auto` behaviour.

    • k33n an hour ago

      pgdown works for me (firefox on linux)

      arrow keys also seem to work fine but you have to click-to-focus first.