left: 'auto' on Android (automargin)

Hi all, I would like to know what automargin setting, if any, I may use on android.

On iOS it is left: 'auto' or top: 'auto' to center on the x or y axis. You may even animate against it on iOS, for instance:

$.registrationEmailFormIndex.getView().animate( {
        left: 'auto',
        duration: 300
    } );