CSS Counter Styles

The @counter-style CSS at-rule allows custom counter styles to be defined. A @counter-style rule defines how to convert a counter value into a string representation.

Scoped Styles: the @scope rule

Allows CSS rules to be scoped to part of the document, with upper and lower limits described by selectors.

CSS Container Style Queries

Style queries in Container Queries provide a way to query the current styling of a container, and conditionally apply additional CSS to the contents of that container.

CSS if() function

The `if()` CSS function allows different values to be set for a property depending on the result of a conditional test. The test can be based on a style query, a media query, or a feature query.

cssstylesheet api: `cssstylesheet()` constructor

document api: stylesheets

document api: stylesheetsets

fontdata api: style

fontface api: style

stylemedia api

stylemedia api: matchmedium

stylemedia api: type

stylepropertymap api

stylepropertymapreadonly api

stylepropertymapreadonly api: [symbol.iterator]

stylepropertymapreadonly api: entries

stylepropertymapreadonly api: foreach

stylepropertymapreadonly api: get

stylepropertymapreadonly api: getall

stylepropertymapreadonly api: has

stylepropertymapreadonly api: keys

stylepropertymapreadonly api: size

stylepropertymapreadonly api: values

stylepropertymap api: append

stylepropertymap api: clear

stylepropertymap api: delete

stylepropertymap api: set

stylesheet api

stylesheetlist api

stylesheetlist api: item

stylesheetlist api: length

stylesheet api: disabled

stylesheet api: href

stylesheet api: media

stylesheet api: ownernode

stylesheet api: title

stylesheet api: type

window api: stylemedia

html element: style

html element: style: type

svg element: style

svg element: style: media

svg element: style: title

svg element: style: type