function size(height, width) {
    if (width === void 0) {
      width = height;
    }
    return {
      height: height,
      width: width
    };
  }
Shorthand to set the height and width properties in a single statement.
@example
// Styles as object usage
const styles = {
  ...size('300px', '250px')
}

// styled-components usage
const div = styled.div`
  ${size('300px', '250px')}
`

// CSS as JS Output

div {
  'height': '300px',
  'width': '250px',
}