HTML Tables need at least `<th scope="row|column">` to be accessible: https://developer.mozilla.org/en-US/docs/Learn/HTML/Tables/A...
"CSS grid layout": https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_grid_la... lists a few interactive resources for learning flexgrid:
- Firefox DevTools > INTRODUCTION TO CSS GRID LAYOUT: https://mozilladevelopers.github.io/playground/css-grid/
- CSS Grid Garden: https://cssgridgarden.com/
MDN > "Relationship of grid layout to other layout methods": https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_grid_la...
MDN: "Box alignment in grid layout": https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_grid_la...