CSS Variables (Custom Properties)

Permits the declaration and usage of cascading variables in stylesheets.

Variable fonts

OpenType font settings that allows a single font file to behave like multiple fonts: it can contain all the allowed variations in width, weight, slant, optical size, or any other exposed axes of variation as defined by the font designer. Variations can be applied via the `font-variation-settings` property.

WAI-ARIA Accessibility features

Method of providing ways for people with disabilities to use dynamic web content and web applications.

elementinternals api: ariabusy

elementinternals api: arialabel

elementinternals api: arialevel

elementinternals api: arialive

elementinternals api: ariamodal

elementinternals api: ariasort

element api: ariaatomic

element api: ariaautocomplete

element api: ariabusy

element api: ariachecked

element api: ariacolcount

element api: ariacolindex

element api: ariacolindextext

element api: ariacolspan

element api: ariacurrent

element api: ariadescription

element api: ariadisabled

element api: ariaexpanded

element api: ariahaspopup

element api: ariahidden

element api: ariainvalid

element api: ariakeyshortcuts

element api: arialabel

element api: arialevel

element api: arialive

element api: ariamodal

element api: ariamultiline

element api: ariamultiselectable

element api: ariaorientation

element api: ariaplaceholder

element api: ariaposinset

element api: ariapressed

element api: ariareadonly

element api: ariarelevant

element api: ariarequired

element api: ariaroledescription

element api: ariarowcount

element api: ariarowindex

element api: ariarowindextext

element api: ariarowspan

element api: ariaselected

element api: ariasetsize

element api: ariasort

element api: ariavaluemax

element api: ariavaluemin

element api: ariavaluenow

element api: ariavaluetext