For my last few projects I've resorted to *,*:before,*:after { min-width: 0} I haven't had a single problem with it. I honestly feel this part of the spec was

For my last few projects I've resorted to *,*:before,*:after { min-width: 0} I haven't had a single problem with it. I honestly feel this part of the spec was a mistake, given all the confusion I see. Online discussions suggest 'auto' is a counterintuitive default.