Don’t take the presentational and container component separation as a dogma. Sometimes it doesn’t matter or it’s hard to draw the line. If you feel unsure about whether a spec…
Remember, components don’t have to emit DOM. They only need to provide composition boundaries between UI concerns.
Writing and maintaining CSS for large applications (and large teams) can be challenging. Teams often have trouble with brittle selectors, naming collisions, specificity, and pile-ups of dead code.