jhoo, dart package can help you build websites using dart, provides flutter like developemnet experience and renders UI using HTML/CSS.
jhoo is pure dart package and it's like a layer on top of dart:html library to create websites. Inspried by flutter, jhoo provides flutter like widget structure to create UI and renders it on web using HTML/CSS and DOM.
Check out jhoo on github
https://github.com/Ganeshsivakumar/jhoo