Tailwind, at least for the last couple major versions, only adds the classes you actually use (plus the resets). Baseline size of the resets is far below 50k.
Great point about the dialog element. I used it in a project recently for the first time... It was very nice to not involve a framework-heavy "portal" scheme, etc.
You’ll add at least 100kb of text for class names styling each HTML element using tailwind.
Since those class names are repeated, they will be gzipped to a very small size. And on top of that browsers/devices are much happier about HTML sizes than about JS sizes. See Performance Inequality Gap: https://infrequently.org/2024/01/performance-inequality-gap-...