A look at the CSS line height unit and how it works.

The idea is to use the lh unit to set the size of the icon.
https://piccalil.li/blog/lh-units-are-cool/

Tired of Inter being everywhere? Two real criteria—cap-centered vertical metrics and a tall x-height—for choosing a UI font, plus 10 alternatives from independent foundries.

TL;DR, two things make a UI font easy to work with:

1. Cap-centered vertical metrics—the space above the cap height equals the space below the baseline. Result: labels center optically on buttons and align with icons, and you can use a single padding token instead of hand-tuned CSS.

2. Tall x-height—lowercase letters reach 70–75% of cap height. Result: the word nearly fills its box, so it looks evenly centered.

AI is the biggest change to UX design in 60 years, yet we know embarrassingly little about how people actually use it. Here are 76 open research questions, organized into 7 lists sized for everyone from high school students to the big AI labs. Students who complete a research challenge gain the two qualities employers now screen for: agency and demonstrated AI experience.

Nine stages of how people operate at work, in order, where the critical job it removes from your manager's plate measures each one.

Read the nine stages again as a list of things your manager no longer has to do: check the work, hunt for the fat in it, coordinate it, track it, worry about future risk, own the outcome, map what happens downstream, decide what matters most, and set the goals in the first place. By the top there’s exactly one job left between the two of you, and it’s agreeing on where you’re both headed.