Tags: border

I was refactoring some CSS on The Session over the weekend. I thought it would be good to switch over to using logical properties exclusively. I did this partly to make the site more easily translatable into languages with different writing modes, but mostly as an exercise to help train me in thinking with logical properties by default.

All in all, it went pretty smoothly. You can kick the tyres by opening up dev tools on The Session and adding a writing-mode declaration to the body or html element.

For the most part, the switchover was smooth. It mostly involved swapping out property names with left, right, top, and bottom for inline-start, inline-end, block-start, and block-end.

The border-radius properties tripped me up a little. You have to use shorthand like border-start-end-radius, not border-block-start-inline-end-radius (that doesn’t exist). So you have to keep the order of the properties in mind:

border-{{block direction}}-{{inline-direction}}-radius

Speaking of shorthand, I also had to kiss some shorthand declarations goodbye. Let’s say I use this shorthand for something like margin or padding:

margin: 1em 1.5em 2em 0.5em;

Those values get applied to margin-top, margin-right, margin-bottom, and margin-left, not the logical equivalents (block-start, inline-end, block-end, and inline-start). So separate declarations are needed instead:

margin-block-start: 1em;
margin-inline-end: 1.5em;
margin-block-end: 2em;
margin-inline-start: 0.5em;

Same goes for shorthand like this:

margin: 1em 2em;

That needs to be written as two declarations:

margin-block: 1em;
margin-inline: 2em;

Now I’ve said it before and I’ll say it again: it feels really weird that you can’t use logical properties in media queries. Although as I said:

Now you could rightly argue that in this instance we’re talking about the physical dimensions of the viewport. So maybe width and height make more sense than inline and block.

But along comes the new kid on the block (or inline), container queries, ready to roll with container-type values like inline-size. I hope it’s just a matter of time until we can use logical properties in all our conditional queries.

The other place where there’s still a cognitive mismatch is in transforms and animations. We’ve got a translateX() function but no translate-inline(). We’ve got translateY() but no translate-block().

On The Session I’m using some JavaScript to figure out the details of some animation effects. I’m using methods like getBoundingClientRect(). It doesn’t return logical properties. So if I ever want to adjust my animations based on writing direction, I’ll need to fork my JavaScript code.

Oh, and one other thing: the aspect-ratio property takes values in the form of width/height, not inline/block. That makes sense if you’re dealing with images, videos, or other embedded content but it makes it really tricky to use aspect-ratio on elements that contain text. I mean, it works fine as long as the text is in a language using a top-to-bottom writing mode, but not for any other languages.

I just got back from Nürnberg where I gave the closing talk at the cheap’n’cheerful border:none event. It was my first time in Nürnberg and I wish I could’ve stayed longer in such a beautiful place. I would’ve liked to stick around for today’s Open Device Lab admin meetup, but alas I had to get up at the crack of dawn to start making my way back to Brighton.

I was in Germany last month too. That time I was in Freiburg, where I was giving the closing talk at Smashing Conference. That was a lot of fun:

So I threw away my slidedeck and went Keynote commando.

The video from that slideless talk is up on Vimeo now for your viewing and/or downloading pleasure.

If you watch it through to the end, then you’ll know why I could be found immediately afterwards showing people some centuries-old carvings on Freiburg’s cathedral.

Update: I’ve published a transcript of the talk.

Sierra Vista is located just a few miles to north of Mexico. If you’re driving up to Benson or Tucson, you can expect to be stopped by the border police. Please have your papers ready for inspection.

Most days, a tethered unmanned blimp hovers over the mountains to the south of Sierra Vista. On some nights, you can see the light of a drone traversing the air above the border.

Sierra Vista is also home to an army base, hence the occasional helicopters and aircraft.

Tomorrow we leave for San Diego, right next to the border with Tijuana.