https://purecss.io/base/
https://tailwindcss.com/
https://bulma.io/
https://primer.style/
https://semantic-ui.com/
https://picturepan2.github.io/spectre/index.html
https://getuikit.com/
https://minicss.org/
https://2019.stateofcss.com/technologies/css-frameworks/
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