1. CSS Grid Layout (level 1)

    Method of using a grid concept to lay out content, providing a mechanism for authors to divide available space for layout into columns and rows using a set of predictable sizing behaviors. Includes support for all `grid-*` properties and the `fr` unit.

  2. CSS3 text-align-last

    CSS property to describe how the last line of a block or a line right before a forced line break when `text-align` is `justify`.

  3. CSS Flexible Box Layout Module

    Method of positioning elements in horizontal or vertical stacks. Support includes all properties prefixed with `flex`, as well as `display: flex`, `display: inline-flex`, `align-content`, `align-items`, `align-self`, `justify-content` and `order`.

  4. vttcue api: linealign

  5. css property: -webkit-line-align

  6. css property: align-content: supported in flex layout: `baseline`

  7. css property: align-content: supported in flex layout: `first baseline`

  8. css property: align-content: supported in flex layout: `last baseline`

  9. css property: align-items: supported in flex layout: `baseline`

  10. css property: align-items: supported in flex layout: `first baseline`

  11. css property: align-items: supported in flex layout: `last baseline`

  12. css property: align-self: supported in flex layout: `baseline`

  13. css property: align-self: supported in flex layout: `first baseline`

  14. css property: align-self: supported in flex layout: `last baseline`

  15. css property: alignment-baseline

  16. css property: alignment-baseline: alphabetic

  17. css property: alignment-baseline: baseline

  18. css property: alignment-baseline: central

  19. css property: alignment-baseline: ideographic

  20. css property: alignment-baseline: mathematical

  21. css property: alignment-baseline: middle

  22. css property: vertical-align: baseline