message: Use COMMON for Box propTypes
diff: import styled from 'styled-components'
  import PropTypes from 'prop-types'
  -import systemPropTypes from '@styled-system/prop-types'
  import {COMMON, FLEX, LAYOUT} from './constants'
  import theme from './theme'
  @@ -13,10 +12,9 @@ const Box = styled.div`
  Box.defaultProps = {theme}
  Box.propTypes = {
  + ...COMMON.propTypes,
  ...FLEX.propTypes,
  ...LAYOUT.propTypes,
  - ...systemPropTypes.space,
  - ...systemPropTypes.color,
  theme: PropTypes.object
  }
  