a) you want your site to look exactly like every other site which uses this framework (rare) You can customise it https://picocss.com/docs/#customization https

a) you want your site to look exactly like every other site which uses this framework (rare) You can customise it https://picocss.com/docs/#customization https://picocss.com/docs/#customization b) every use of an element is for the exact same purpose (also rare) Styling is done by combinations of elements. Consistency between those combinations is good design.