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Chris’ Corner: Cloud Four

This is an appreciation post for the Cloud Four Blog. It’s one of those must-subscribes. I find myself adding almost every post they put out to my archive of posts to dig into. So since I’m overflowing with them a bit, and there is a hot-off-the-presses one, I figured I’d share that and a bunch of favorites.

In Responsive Letter Spacing, Tyler Sticka covers a scenario where you want to tighten up letter-spacing, but be smart about it. At big font sizes, some tightening looks good (I put it on my own starter) but at smaller font sizes, it harms readability. Using em is a good start as it scales with the font size automatically, but then it’s better to reduce it as it gets smaller. Fortunately Tyler found a great way to do it with clamp().

* { letter-spacing: clamp(
    -0.05em,
    calc((1em - 1rem) / -10), 0em
  );
}

Great minds think alike as I was thinking about the UI/UX pattern of one-time password inputs lately too. Tyler again here tackles it his own way in Simple One-Time Passcode Inputs. We agree: don’t actually make it multiple elements, as tempting as that is from a styling perspective. There is simply too much JavaScript required to make that work nicely (which can easily break down) and you otherwise get for free if you don’t do that. Instead, use the proper set of attributes on an input for it: input type="text" inputmode="numeric" autocomplete="one-time-code" maxlength="6">
Then just style it with CSS to make it look however you want. That is, apply the input mask with styles alone.

I was just bemoaning the loss of JPEG XL the other day, but in On Container Queries, Responsive Images, and JPEG-XL a couple years back, Jason Grigsby was already in grief. Container Queries, one of the great CSS revelations of our time, is spiritually connected to responsive images in that they want to do the most-appropriate thing with the information available on how they are displayed on the page. You’d think they would get along and share information, but you’d be wrong. We could evolve the syntaxes to help, and probably should, but it’s intereseting that JPEG-XL, and image format, was actually somewhat designed to help with this and would have been a serendipitous gift for web developers, if we actually were able to use it.

Speaking of images, I think we all know we’re not really supposed to be using GIF anymore as the performance sucks and we can replicate it with video. I tend to like the video approach, but there are significant drawbacks to be aware of:

* Colin Bendell pointed out that browsers don’t preload video, which can impact perceived performance.
* By default, the video experience isn’t very GIF-like: You need a magic combination of autoplay, loop, muted and playsinline attributes to achieve similar behavior.
* The video element exposes more playback control possibilities, which can be good for accessibility, but it lacks an alt attribute for alternative text. (The title and fallback content don’t seem to be exposed to assistive devices in a similar way, but maybe aria-label or aria-labelledby would work?)

Tyler looked at alternatives and there are some really strong contenders in the form of newfangled image formats. But (surprise surprise) the browser support story is dicey.

Gerardo Rodriguez talks about Testing HTML Light DOM Web Components: Easier Than Expected! Good to know, really. Testing here meaning load up the component in a browser-like environment and make sure what you expect to be there in the DOM is there and interacting with it does what you expect.

It’s not like you can’t test Web Components that use the Shadow DOM, but in practice it’s an annoying barrier that you have to manually account for in many places, and other [...]

CodePen

Chris’ Corner: Cloud Four

This is an appreciation post for the Cloud Four Blog. It’s one of those must-subscribes. I find myself adding almost every post they put out to my archive of posts to dig into. So since I&#82…

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