What to do with className? What is it for?

[arnoldbird]

I see it's possible to set a className in attrs: https://github.com/gcanti/tcomb-form/blob/master/GUIDE.md#styling

But what for? What does one then do with that className? Can it be used to style the input? If so, how?

[Ankcorn]

The class name will apply a CSS attribute the field in the form. This can then be styled from a CSS style sheet.