message: Add sticky for mobile donation menu
diff: @@ -28,7 +28,8 @@ const useStyles = makeStyles((theme: Theme) =>
  top: theme.spacing(12),
  },
  donationMobileWrapper: {
  - top: theme.spacing(10),
  + position: 'sticky',
  + top: 0,
  order: -1,
  marginTop: `-${theme.spacing(2)}`,
  minWidth: '100vw',
  