content: heading with nested flex boxes.
image as css background
CSS-only (apply your own styles)
Based on the W3C/WAI recommendations here: https://www.w3.org/WAI/tutorials/carousels/
css-only navigation element that displays as select box for small screens and inline links for larger ones.
Requirements: Bootstrap 3, sidebar responsive with max-width of 320px
Client needed a responsive, metro-like tile interface but with bootstrap grid. They also wanted vertical centering on some of the tiles. And support down to IE9 to boot.