Underlines and line height

I was thinking about something I wrote yesterday when I was talking about styling underlines on links:

For a start, you can adjust the distance of the underline from the text using text-underline-offset. If you’re using a generous line-height, use a generous distance here too.

For some reason, I completely forgot that we’ve got a line-height unit in CSS now: lh. So if you want to make the distance of your underline proportional to the line height of the text that the link is part of, it’s easy-peasy:

text-underline-offset: 0.15lh;

The greater the line height, the greater the distance between the link text and its underline.

I think this one is going into my collection of CSS snippets I use on almost every project.

The Great CSS Expansion | Butler’s Log

Web development follows a familiar cycle. First we glue together a solution with whatever we have — JavaScript, image hacks, Flash, anything. Then the platform matures, and CSS or HTML eventually makes that same workaround native. Rounded corners, custom fonts, smooth scrolling, sticky positioning: all of these started as JavaScript-heavy hacks before CSS turned them into a single declaration.

We are in another one of those transition moments. A new wave of long-requested CSS features is finally landing, and many of them are explicitly designed to replace patterns that used to require JavaScript. Not as approximations — as first-class platform primitives that handle the edge cases, run in the right thread, and need zero dependencies.

Progressive Web Components | Ariel Salminen

I’m slapping my forehead—progressive web components is a perfect name for what I’ve been calling HTML web components. Why didn’t I think of that?

A Progressive Web Component is a native Custom Element designed in two layers: a base layer of HTML and CSS that renders immediately, without JavaScript, and an enhancement layer of JavaScript that adds reactivity, event handling, and more advanced templating.

Performance-Optimized Video Embeds with Zero JavaScript – Frontend Masters Blog

This is a clever technique for a CSS/HTML only way of just-in-time loading of iframes using details and summary.

An in-depth guide to customising lists with CSS - Piccalilli

Think you know about styling lists with CSS? Think again!

This is just a taste of the kind of in-depth knowledge that Rich will be beaming directly into our brains at Web Day Out…

NoLoJS: Reducing the JS Workload with HTML and CSS - Web Performance Calendar

You might not need (much) JavaScript for these common interface patterns.

While we all love the power and flexibility JS provides, we should also respect it, and our users, by limiting its use to only what it needs to do.

Yes! Client-side JavaScript should do what only client-side JavaScript can do.