The best alternatives to lit are Wing, The Simpsons in CSS, and Puppertino. If these 3 options don't work for you, we've listed a few more alternatives below.
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Most projects are overloaded with functionality, which makes it difficult to create applications. UImini let you build modern UI quickly by components way. Css only, 4kb gzip. Help us by starring it on Github https://github.com/uimini/uimini
A component-and-utility-centric SCSS framework designed for rapid prototyping. Use beautiful pre-built components to bootstrap your next project and utility classes to polish your final design.