[fmnxl]

It's more ergonomic than using stylesheets.

- No external stylesheets. No need to think about optimising the serving of CSS assets (e.g. with CDN)

- Co-locality: work on styling right where the element is, you don't have to figure out which stylesheet affects a particular element.

- No naming headache, as there's no need to give class names to elements in order to style a particular (or set of) elements

These days HTML is served compressed, with gzip/brotli, so long class attributes won't bloat the resulting file size by much.

Stylesheets still has its place of course.