it could be Bulma (easy, no interaction)
or materialize css https://materializecss.com/ (small, ...)
or UIkit https://getuikit.com
or tailwind has also tailwindui (preprocessing needed, comples)
or semantic-ui NO stands still
slider is essential!
maybe also selection of period and time....
one or more periods - on a continuing line
one or more timeset - from a double cirle clock?