export function Spacer(props: {className?: string; w?: number; h?: number}) {
  const {w, h, className} = props

  const width = w === undefined ? undefined : w * 0.25 + 'rem'
  const height = h === undefined ? undefined : h * 0.25 + 'rem'

  return <div style={{width, height, flexShrink: 0}} className={className} />
}