Responsive Hexagon Grid Using Modern CSS | CSS-Tricks
Modern CSS features (corner-shape, sibling-index(), unit-division) enable a simpler, media-query-free responsive hexagon grid implementation currently supported in Chrome.
Sequential linear() Animation With N Elements | CSS-Tricks
Use sibling-index() and sibling-count() with the linear() timing function to create automatically staggered sequential animations for any number of sibling elements.