title: Material-UI v5 Datepicker - expand to the full width of its parent
body: <p>In Material-UI v4 the fullWidth prop could be passed to the Datepicker component. However, in v5 this prop is not listed in the component API. All css selectors for this component are non-deterministic and so I am unable to use the width css property. Is there any alternative that I have missed?</p>