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. CSS Subgrid

    Feature of the CSS Grid Layout Module Level 2 that allows a grid-item with its own grid to align in one or both dimensions with its parent grid.

  3. gap property for Flexbox

    `gap` for flexbox containers to create gaps/gutters between flex items

  4. CSS3 Multiple column layout

    Method of flowing information in multiple columns

  5. cspviolationreportbody api: columnnumber

  6. deprecationreportbody api: columnnumber

  7. interventionreportbody api: columnnumber

  8. permissionspolicyviolationreportbody api: columnnumber

  9. securitypolicyviolationevent api: columnnumber

  10. css property: -ms-grid-column

  11. css property: -ms-grid-column-align

  12. css property: -ms-grid-column-span

  13. css property: break-after: supported in multi-column layout

  14. css property: break-after: supported in multi-column layout: `avoid-column`

  15. css property: break-after: supported in multi-column layout: `column`

  16. css property: break-before: supported in multi-column layout: `avoid-column`

  17. css property: break-before: supported in multi-column layout: `column`

  18. css property: break-inside: supported in multi-column layout: `avoid-column`

  19. css property: column-count

  20. css property: column-fill

  21. css property: column-fill: `balance-all`

  22. css property: column-gap: supported in flex layout

  23. css property: column-gap: supported in grid layout

  24. css property: column-gap: supported in multi-column layout

  25. css property: column-gap: supported in multi-column layout: `calc()` values

  26. css property: column-gap: supported in multi-column layout: `<percentage>` values

  27. css property: column-rule

  28. css property: column-rule-color

  29. css property: column-rule-style

  30. css property: column-rule-width

  31. css property: column-span

  32. css property: column-width

  33. css property: column-width: intrinsic sizes

  34. css property: columns

  35. css property: display: `table`, `table-cell`, `table-column`, `table-column-group`, `table-footer-group`, `table-header-group`, `table-row`, and `table-row-group`

  36. css property: flex-direction

  37. css property: gap: supported in multi-column layout

  38. css property: grid-auto-columns

  39. css property: grid-column

  40. css property: grid-column-end

  41. css property: grid-column-start

  42. css property: grid-template-columns

  43. css property: grid-template-columns: animation of tracks

  44. css property: grid-template-columns: `fit-content()`

  45. css property: grid-template-columns: `masonry`

  46. css property: grid-template-columns: `minmax()`

  47. css property: grid-template-columns: `repeat()`

  48. css property: grid-template-columns: `subgrid`

  49. css selector: column combinator (`a || b`)

  50. javascript built-in: error: columnnumber