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.
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: ariacontrolselements
element api: ariacurrent
element api: ariadescribedbyelements
element api: ariadescription
element api: ariadetailselements
element api: ariadisabled
element api: ariaexpanded
element api: ariaflowtoelements
element api: ariahaspopup
element api: ariahidden
element api: ariainvalid
element api: ariakeyshortcuts
element api: arialabel
element api: arialabelledbyelements
element api: arialevel
element api: arialive
element api: ariamodal
element api: ariamultiline
element api: ariamultiselectable
element api: ariaorientation
element api: ariaownselements
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
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