import * as React from 'react' ; interface SquareProps { backgroundColor ? : string ; size ? : string ; } const Square = ( { backgroundColor = 'rgba(0, 0, 0, 0.3)' , size = '100%' } ) => { return ( < div style = { { backgroundColor , borderRadius : '0.25rem' , height : size , width : size , } } />); } ; export default Square ;