1. CSS Environment Variables env()

    Usage of environment variables like `safe-area-inset-top`.

  2. CSS Variables (Custom Properties)

    Permits the declaration and usage of cascading variables in stylesheets.

  3. CSS font-variant-alternates

    Controls the usage of alternate glyphs associated to alternative names defined in @font-feature-values for certain types of OpenType fonts.

  4. CSS font-variant-numeric

    CSS property that provides different ways of displaying numbers, fractions, and ordinal markers.

  5. css at-rule: `@font-face`: font-variant

  6. css property: --*: `env()`: safe area inset variable `safe-area-inset-bottom`

  7. css property: --*: `env()`: safe area inset variable `safe-area-inset-left`

  8. css property: --*: `env()`: safe area inset variable `safe-area-inset-right`

  9. css property: --*: `env()`: safe area inset variable `safe-area-inset-top`

  10. css property: --*: `env()`: window controls overlay variable `titlebar-area-height`

  11. css property: --*: `env()`: window controls overlay variable `titlebar-area-width`

  12. css property: --*: `env()`: window controls overlay variable `titlebar-area-x`

  13. css property: --*: `env()`: window controls overlay variable `titlebar-area-y`

  14. css property: --*: `var()`

  15. css property: font-variant

  16. css property: font-variant-alternates: normal

  17. css property: font-variant-alternates: `swash()`

  18. css property: font-variant-caps

  19. css property: font-variant-caps: all-petite-caps

  20. css property: font-variant-caps: all-small-caps

  21. css property: font-variant-caps: normal

  22. css property: font-variant-caps: petite-caps

  23. css property: font-variant-caps: small-caps

  24. css property: font-variant-caps: titling-caps

  25. css property: font-variant-caps: unicase

  26. css property: font-variant-east-asian

  27. css property: font-variant-east-asian: jis04

  28. css property: font-variant-east-asian: jis78

  29. css property: font-variant-east-asian: jis83

  30. css property: font-variant-east-asian: jis90

  31. css property: font-variant-east-asian: normal

  32. css property: font-variant-east-asian: ruby

  33. css property: font-variant-emoji

  34. css property: font-variant-ligatures

  35. css property: font-variant-ligatures: none

  36. css property: font-variant-ligatures: normal

  37. css property: font-variant-numeric: lining-nums

  38. css property: font-variant-numeric: normal

  39. css property: font-variant-numeric: ordinal

  40. css property: font-variant-numeric: slashed-zero

  41. css property: font-variant-position

  42. css property: font-variant-position: normal

  43. css property: font-variant-position: sub

  44. css property: font-variant-position: super

  45. css property: font-variant: historical-forms

  46. css property: font-variant: none

  47. css property: font-variant: normal

  48. css property: font-variant: sub

  49. css property: font-variant: super

  50. css property: font-variant: `ß` → `ss`