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.

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.

gap property for Flexbox

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

CSS3 Multiple column layout

Method of flowing information in multiple columns

cspviolationreportbody api: columnnumber

deprecationreportbody api: columnnumber

interventionreportbody api: columnnumber

permissionspolicyviolationreportbody api: columnnumber

securitypolicyviolationevent api: columnnumber

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

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

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

css property: break-before: supported in multi-column layout

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

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

css property: break-inside: supported in multi-column layout

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

css property: column-count

css property: column-fill

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

css property: column-gap

css property: column-gap: supported in flex layout

css property: column-gap: supported in grid layout

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

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

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

css property: column-rule

css property: column-rule-color

css property: column-rule-style

css property: column-rule-width

css property: column-span

css property: column-width

css property: column-width: intrinsic sizes

css property: columns

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

css property: flex-direction

css property: gap: supported in multi-column layout

css property: grid-auto-columns

css property: grid-column

css property: grid-column-end

css property: grid-column-start

css property: grid-template-columns

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

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

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

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

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

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

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

javascript built-in: error: columnnumber