Responsive Mondriaan schilderij van Jen Simmons gemaakt met CSS Flexbox, ontwerper bij Advocate bij Mozilla in New York:
https://labs.jensimmons.com/2017/01-011D.html

CSS Grid Layout: https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Grid_Layout
Grid-Gap https://developer.mozilla.org/de/docs/Web/CSS/grid-gap