Are there some good HTML5 UI libraries?
I am looking for a HTML5 UI library, or just singular libraries for a particular UI control. I want them to be lightweight, use only HTML5, CSS3 and ES5. They should be skinnable easily, and provide configuration and events/callbacks.

Things such as grids, windows, tabs, file menus, context menus are something I'd like to see.
Are there some good HTML5 UI libraries?
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I am looking for a HTML5 UI library, or just singular libraries for a particular UI control. I want them to be lightweight, use only HTML5, CSS3 and ES5. They should be skinnable easily, and provide configuration and events/callbacks.

Things such as grids, windows, tabs, file menus, context menus are something I'd like to see.