BCD Watch

BCD Changes Report

Summary of BCD changes from through 🔗

Browser Support Changes: +11, -0

Support increases (11)

API

  1. api ➞ ReadableStream ➞ transferable
    Added to Safari  ➞  3 of 3 engines
  2. api ➞ SubtleCrypto ➞ decapsulateBits Spec link
    Added to Chrome  ➞  2 of 3 engines
  3. api ➞ SubtleCrypto ➞ decapsulateKey Spec link
    Added to Chrome  ➞  2 of 3 engines
  4. api ➞ SubtleCrypto ➞ encapsulateBits Spec link
    Added to Chrome  ➞  2 of 3 engines
  5. api ➞ SubtleCrypto ➞ encapsulateKey Spec link
    Added to Chrome  ➞  2 of 3 engines
  6. api ➞ SubtleCrypto ➞ getPublicKey Spec link
    Added to Chrome  ➞  1 of 3 engines
  7. api ➞ SubtleCrypto ➞ supports_static Spec link
    Added to Chrome  ➞  1 of 3 engines

HTML

  1. html ➞ elements ➞ img ➞ sizes ➞ auto
    Added to Safari  ➞  3 of 3 engines

JAVASCRIPT

  1. javascript ➞ statements ➞ import ➞ import_attributes ➞ type_text
    Added to Chrome  ➞  2 of 3 engines

WEBDRIVER

  1. webdriver ➞ bidi ➞ browsingContext ➞ startScreencast ➞ destinationFolder_parameter Spec link
    Added to Firefox  ➞  1 of 3 engines

WEBEXTENSIONS

  1. webextensions ➞ api ➞ runtime ➞ getVersion
    Added to Firefox  ➞  3 of 3 engines

BCD Metadata Changes: 431

Show all 431 changes

Note: The following represent changes to BCD metadata keys in the reported time period. Keys are not implementations, and they don't represent commitments toward implementation, etc. A new key occurring is perhaps a signal that some implementer was serious enough to add the key. Many of the features that are 'removed' are usually just 'moved' or 'renamed', but we don't have great ways to highlight that.

Backfilled entries (288)

The entries in this section saw support information change since the report on Monday, 21 September 2026, but all the supported browser versions given were more than a couple of months old. Typically, these are cases of support information being updated long after the support actually landed in a browser, but nobody ever updated the BCD entry.

API

  1. api ➞ CSSContainerRule ➞ conditions
    Backfilled for Safari  ➞  3 of 3 engines
  2. api ➞ GPUError
    Backfilled for Safari  ➞  2 of 3 engines
  3. api ➞ GPUError ➞ message
    Backfilled for Safari  ➞  2 of 3 engines
  4. api ➞ GPUTexture ➞ textureBindingViewDimension Spec link
    Backfilled for Safari  ➞  2 of 3 engines
  5. api ➞ MediaStreamTrack ➞ applyConstraints ➞ resizeMode_constraint Spec link
    Backfilled for Firefox  ➞  2 of 3 engines
  6. api ➞ Notification ➞ navigate
    Backfilled for Firefox  ➞  2 of 3 engines
  7. api ➞ PerformanceResourceTiming ➞ deliveryType
    Backfilled for Firefox  ➞  3 of 3 engines
  8. api ➞ Permissions ➞ revoke
    Backfilled for Firefox  ➞  2 of 3 engines
  9. api ➞ QuotaExceededError ➞ QuotaExceededError
    Backfilled for Safari  ➞  2 of 3 engines
  10. api ➞ QuotaExceededError
    Backfilled for Safari  ➞  2 of 3 engines
  11. api ➞ QuotaExceededError ➞ quota
    Backfilled for Safari  ➞  2 of 3 engines
  12. api ➞ QuotaExceededError ➞ requested
    Backfilled for Safari  ➞  2 of 3 engines
  13. api ➞ ReportingObserver ➞ ReportingObserver ➞ options_parameter ➞ types_property ➞ coep Spec link
    Backfilled for Safari  ➞  2 of 3 engines
  14. api ➞ Request ➞ body
    Backfilled for Firefox  ➞  3 of 3 engines
  15. api ➞ Request ➞ duplex
    Backfilled for Firefox  ➞  3 of 3 engines
  16. api ➞ SpeechGrammarList ➞ SpeechGrammarList
    Backfilled for Firefox  ➞  1 of 3 engines
  17. api ➞ SpeechRecognition ➞ SpeechRecognition
    Backfilled for Firefox  ➞  2 of 3 engines
  18. api ➞ SpeechRecognition
    Backfilled for Firefox  ➞  2 of 3 engines
  19. api ➞ SpeechRecognition ➞ available_static
    Backfilled for Firefox  ➞  2 of 3 engines
  20. api ➞ SpeechRecognition ➞ install_static
    Backfilled for Firefox  ➞  2 of 3 engines
  21. api ➞ SpeechRecognition ➞ phrases
    Backfilled for Firefox  ➞  2 of 3 engines
  22. api ➞ SpeechRecognition ➞ processLocally
    Backfilled for Firefox  ➞  2 of 3 engines
  23. api ➞ SpeechRecognition ➞ unspokenPunctuation
    Backfilled for Firefox  ➞  2 of 3 engines
  24. api ➞ SpeechRecognitionErrorEvent ➞ SpeechRecognitionErrorEvent
    Backfilled for Firefox  ➞  2 of 3 engines
  25. api ➞ SpeechRecognitionErrorEvent
    Backfilled for Firefox  ➞  2 of 3 engines
  26. api ➞ SpeechRecognitionErrorEvent ➞ error
    Backfilled for Firefox  ➞  3 of 3 engines
  27. api ➞ SpeechRecognitionErrorEvent ➞ message
    Backfilled for Firefox  ➞  3 of 3 engines
  28. api ➞ SpeechRecognitionEvent ➞ SpeechRecognitionEvent
    Backfilled for Firefox  ➞  2 of 3 engines
  29. api ➞ SpeechRecognitionPhrase ➞ SpeechRecognitionPhrase
    Backfilled for Firefox  ➞  2 of 3 engines
  30. api ➞ SpeechRecognitionPhrase
    Backfilled for Firefox  ➞  2 of 3 engines
  31. api ➞ SpeechRecognitionPhrase ➞ boost
    Backfilled for Firefox  ➞  2 of 3 engines
  32. api ➞ SpeechRecognitionPhrase ➞ phrase
    Backfilled for Firefox  ➞  2 of 3 engines
  33. api ➞ WebTransport ➞ supportsReliableOnly_static Spec link
    Backfilled for Firefox  ➞  2 of 3 engines
  34. api ➞ AutofillEvent Spec link
    Backfilled for Chrome  ➞  1 of 3 engines
  35. api ➞ AutofillEvent ➞ autofillValues Spec link
    Backfilled for Chrome  ➞  1 of 3 engines
  36. api ➞ AutofillEvent ➞ refill Spec link
    Backfilled for Chrome  ➞  1 of 3 engines
  37. api ➞ Sanitizer ➞ setJavascriptURLs Spec link
    Backfilled for Firefox  ➞  1 of 3 engines
  38. api ➞ USB ➞ requestDevice ➞ options_exclusionFilters_parameter Spec link
    Backfilled for Chrome  ➞  1 of 3 engines

CSS

  1. css ➞ properties ➞ corner-block-end-shape
    Backfilled for Firefox  ➞  3 of 3 engines
  2. css ➞ properties ➞ corner-block-end-shape ➞ bevel Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  3. css ➞ properties ➞ corner-block-end-shape ➞ notch Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  4. css ➞ properties ➞ corner-block-end-shape ➞ round Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  5. css ➞ properties ➞ corner-block-end-shape ➞ scoop Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  6. css ➞ properties ➞ corner-block-end-shape ➞ square Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  7. css ➞ properties ➞ corner-block-end-shape ➞ squircle Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  8. css ➞ properties ➞ corner-block-start-shape
    Backfilled for Firefox  ➞  3 of 3 engines
  9. css ➞ properties ➞ corner-block-start-shape ➞ bevel Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  10. css ➞ properties ➞ corner-block-start-shape ➞ notch Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  11. css ➞ properties ➞ corner-block-start-shape ➞ round Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  12. css ➞ properties ➞ corner-block-start-shape ➞ scoop Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  13. css ➞ properties ➞ corner-block-start-shape ➞ square Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  14. css ➞ properties ➞ corner-block-start-shape ➞ squircle Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  15. css ➞ properties ➞ corner-bottom-left-shape
    Backfilled for Firefox  ➞  3 of 3 engines
  16. css ➞ properties ➞ corner-bottom-left-shape ➞ bevel Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  17. css ➞ properties ➞ corner-bottom-left-shape ➞ notch Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  18. css ➞ properties ➞ corner-bottom-left-shape ➞ round Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  19. css ➞ properties ➞ corner-bottom-left-shape ➞ scoop Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  20. css ➞ properties ➞ corner-bottom-left-shape ➞ square Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  21. css ➞ properties ➞ corner-bottom-left-shape ➞ squircle Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  22. css ➞ properties ➞ corner-bottom-right-shape
    Backfilled for Firefox  ➞  3 of 3 engines
  23. css ➞ properties ➞ corner-bottom-right-shape ➞ bevel Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  24. css ➞ properties ➞ corner-bottom-right-shape ➞ notch Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  25. css ➞ properties ➞ corner-bottom-right-shape ➞ round Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  26. css ➞ properties ➞ corner-bottom-right-shape ➞ scoop Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  27. css ➞ properties ➞ corner-bottom-right-shape ➞ square Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  28. css ➞ properties ➞ corner-bottom-right-shape ➞ squircle Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  29. css ➞ properties ➞ corner-bottom-shape
    Backfilled for Firefox  ➞  3 of 3 engines
  30. css ➞ properties ➞ corner-bottom-shape ➞ bevel Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  31. css ➞ properties ➞ corner-bottom-shape ➞ notch Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  32. css ➞ properties ➞ corner-bottom-shape ➞ round Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  33. css ➞ properties ➞ corner-bottom-shape ➞ scoop Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  34. css ➞ properties ➞ corner-bottom-shape ➞ square Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  35. css ➞ properties ➞ corner-bottom-shape ➞ squircle Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  36. css ➞ properties ➞ corner-end-end-shape
    Backfilled for Firefox  ➞  3 of 3 engines
  37. css ➞ properties ➞ corner-end-end-shape ➞ bevel Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  38. css ➞ properties ➞ corner-end-end-shape ➞ notch Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  39. css ➞ properties ➞ corner-end-end-shape ➞ round Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  40. css ➞ properties ➞ corner-end-end-shape ➞ scoop Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  41. css ➞ properties ➞ corner-end-end-shape ➞ square Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  42. css ➞ properties ➞ corner-end-end-shape ➞ squircle Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  43. css ➞ properties ➞ corner-end-start-shape
    Backfilled for Firefox  ➞  3 of 3 engines
  44. css ➞ properties ➞ corner-end-start-shape ➞ bevel Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  45. css ➞ properties ➞ corner-end-start-shape ➞ notch Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  46. css ➞ properties ➞ corner-end-start-shape ➞ round Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  47. css ➞ properties ➞ corner-end-start-shape ➞ scoop Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  48. css ➞ properties ➞ corner-end-start-shape ➞ square Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  49. css ➞ properties ➞ corner-end-start-shape ➞ squircle Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  50. css ➞ properties ➞ corner-inline-end-shape
    Backfilled for Firefox  ➞  3 of 3 engines
  51. css ➞ properties ➞ corner-inline-end-shape ➞ bevel Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  52. css ➞ properties ➞ corner-inline-end-shape ➞ notch Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  53. css ➞ properties ➞ corner-inline-end-shape ➞ round Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  54. css ➞ properties ➞ corner-inline-end-shape ➞ scoop Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  55. css ➞ properties ➞ corner-inline-end-shape ➞ square Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  56. css ➞ properties ➞ corner-inline-end-shape ➞ squircle Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  57. css ➞ properties ➞ corner-inline-start-shape
    Backfilled for Firefox  ➞  3 of 3 engines
  58. css ➞ properties ➞ corner-inline-start-shape ➞ bevel Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  59. css ➞ properties ➞ corner-inline-start-shape ➞ notch Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  60. css ➞ properties ➞ corner-inline-start-shape ➞ round Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  61. css ➞ properties ➞ corner-inline-start-shape ➞ scoop Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  62. css ➞ properties ➞ corner-inline-start-shape ➞ square Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  63. css ➞ properties ➞ corner-inline-start-shape ➞ squircle Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  64. css ➞ properties ➞ corner-left-shape
    Backfilled for Firefox  ➞  3 of 3 engines
  65. css ➞ properties ➞ corner-left-shape ➞ bevel Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  66. css ➞ properties ➞ corner-left-shape ➞ notch Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  67. css ➞ properties ➞ corner-left-shape ➞ round Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  68. css ➞ properties ➞ corner-left-shape ➞ scoop Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  69. css ➞ properties ➞ corner-left-shape ➞ square Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  70. css ➞ properties ➞ corner-left-shape ➞ squircle Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  71. css ➞ properties ➞ corner-right-shape
    Backfilled for Firefox  ➞  3 of 3 engines
  72. css ➞ properties ➞ corner-right-shape ➞ bevel Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  73. css ➞ properties ➞ corner-right-shape ➞ notch Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  74. css ➞ properties ➞ corner-right-shape ➞ round Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  75. css ➞ properties ➞ corner-right-shape ➞ scoop Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  76. css ➞ properties ➞ corner-right-shape ➞ square Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  77. css ➞ properties ➞ corner-right-shape ➞ squircle Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  78. css ➞ properties ➞ corner-shape
    Backfilled for Firefox  ➞  3 of 3 engines
  79. css ➞ properties ➞ corner-shape ➞ bevel Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  80. css ➞ properties ➞ corner-shape ➞ notch Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  81. css ➞ properties ➞ corner-shape ➞ round Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  82. css ➞ properties ➞ corner-shape ➞ scoop Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  83. css ➞ properties ➞ corner-shape ➞ square Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  84. css ➞ properties ➞ corner-shape ➞ squircle Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  85. css ➞ properties ➞ corner-start-end-shape
    Backfilled for Firefox  ➞  3 of 3 engines
  86. css ➞ properties ➞ corner-start-end-shape ➞ bevel Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  87. css ➞ properties ➞ corner-start-end-shape ➞ notch Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  88. css ➞ properties ➞ corner-start-end-shape ➞ round Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  89. css ➞ properties ➞ corner-start-end-shape ➞ scoop Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  90. css ➞ properties ➞ corner-start-end-shape ➞ square Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  91. css ➞ properties ➞ corner-start-end-shape ➞ squircle Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  92. css ➞ properties ➞ corner-start-start-shape
    Backfilled for Firefox  ➞  3 of 3 engines
  93. css ➞ properties ➞ corner-start-start-shape ➞ bevel Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  94. css ➞ properties ➞ corner-start-start-shape ➞ notch Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  95. css ➞ properties ➞ corner-start-start-shape ➞ round Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  96. css ➞ properties ➞ corner-start-start-shape ➞ scoop Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  97. css ➞ properties ➞ corner-start-start-shape ➞ square Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  98. css ➞ properties ➞ corner-start-start-shape ➞ squircle Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  99. css ➞ properties ➞ corner-top-left-shape
    Backfilled for Firefox  ➞  3 of 3 engines
  100. css ➞ properties ➞ corner-top-left-shape ➞ bevel Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  101. css ➞ properties ➞ corner-top-left-shape ➞ notch Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  102. css ➞ properties ➞ corner-top-left-shape ➞ round Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  103. css ➞ properties ➞ corner-top-left-shape ➞ scoop Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  104. css ➞ properties ➞ corner-top-left-shape ➞ square Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  105. css ➞ properties ➞ corner-top-left-shape ➞ squircle Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  106. css ➞ properties ➞ corner-top-right-shape
    Backfilled for Firefox  ➞  3 of 3 engines
  107. css ➞ properties ➞ corner-top-right-shape ➞ bevel Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  108. css ➞ properties ➞ corner-top-right-shape ➞ notch Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  109. css ➞ properties ➞ corner-top-right-shape ➞ round Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  110. css ➞ properties ➞ corner-top-right-shape ➞ scoop Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  111. css ➞ properties ➞ corner-top-right-shape ➞ square Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  112. css ➞ properties ➞ corner-top-right-shape ➞ squircle Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  113. css ➞ properties ➞ corner-top-shape
    Backfilled for Firefox  ➞  3 of 3 engines
  114. css ➞ properties ➞ corner-top-shape ➞ bevel Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  115. css ➞ properties ➞ corner-top-shape ➞ notch Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  116. css ➞ properties ➞ corner-top-shape ➞ round Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  117. css ➞ properties ➞ corner-top-shape ➞ scoop Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  118. css ➞ properties ➞ corner-top-shape ➞ square Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  119. css ➞ properties ➞ corner-top-shape ➞ squircle Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  120. css ➞ properties ➞ hyphenate-limit-chars
    Backfilled for Safari  ➞  3 of 3 engines
  121. css ➞ properties ➞ hyphenate-limit-chars ➞ auto Spec link
    Backfilled for Safari  ➞  3 of 3 engines
  122. css ➞ properties ➞ shape-outside ➞ path
    Backfilled for Safari  ➞  2 of 3 engines
  123. css ➞ types ➞ random
    Backfilled for Firefox  ➞  3 of 3 engines
  124. css ➞ types ➞ random ➞ dashed-ident
    Backfilled for Firefox  ➞  3 of 3 engines
  125. css ➞ types ➞ random ➞ step
    Backfilled for Firefox  ➞  3 of 3 engines
  126. css ➞ properties ➞ background ➞ text Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  127. css ➞ properties ➞ background-blend-mode ➞ plus-lighter Spec link
    Backfilled for Firefox  ➞  1 of 3 engines
  128. css ➞ properties ➞ background-position-x ➞ center Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  129. css ➞ properties ➞ background-position-x ➞ left Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  130. css ➞ properties ➞ background-position-x ➞ right Spec link
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  131. css ➞ properties ➞ background-position-y ➞ bottom Spec link
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  132. css ➞ properties ➞ background-position-y ➞ center Spec link
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  133. css ➞ properties ➞ background-position-y ➞ top Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  134. css ➞ properties ➞ clip-path ➞ none Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  135. css ➞ properties ➞ content-visibility ➞ is_animatable Spec link
    Backfilled for Safari  ➞  1 of 3 engines
  136. css ➞ properties ➞ continue ➞ -webkit-legacy Spec link
    Backfilled for Safari  ➞  1 of 3 engines
  137. css ➞ properties ➞ display ➞ is_animatable Spec link
    Backfilled for Safari  ➞  1 of 3 engines
  138. css ➞ properties ➞ font-size ➞ large Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  139. css ➞ properties ➞ font-size ➞ larger Spec link
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  140. css ➞ properties ➞ font-size ➞ medium Spec link
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  141. css ➞ properties ➞ font-size ➞ small Spec link
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  142. css ➞ properties ➞ font-size ➞ smaller Spec link
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  143. css ➞ properties ➞ font-size ➞ x-large Spec link
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  144. css ➞ properties ➞ font-size ➞ x-small Spec link
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  145. css ➞ properties ➞ font-size ➞ xx-large Spec link
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  146. css ➞ properties ➞ font-size ➞ xx-small Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  147. css ➞ properties ➞ font-variant ➞ all-petite-caps Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  148. css ➞ properties ➞ font-variant ➞ all-small-caps Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  149. css ➞ properties ➞ font-variant ➞ common-ligatures Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  150. css ➞ properties ➞ font-variant ➞ contextual Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  151. css ➞ properties ➞ font-variant ➞ diagonal-fractions Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  152. css ➞ properties ➞ font-variant ➞ discretionary-ligatures Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  153. css ➞ properties ➞ font-variant ➞ emoji Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  154. css ➞ properties ➞ font-variant ➞ full-width Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  155. css ➞ properties ➞ font-variant ➞ historical-ligatures Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  156. css ➞ properties ➞ font-variant ➞ jis04 Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  157. css ➞ properties ➞ font-variant ➞ jis78 Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  158. css ➞ properties ➞ font-variant ➞ jis83 Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  159. css ➞ properties ➞ font-variant ➞ jis90 Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  160. css ➞ properties ➞ font-variant ➞ lining-nums Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  161. css ➞ properties ➞ font-variant ➞ no-common-ligatures Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  162. css ➞ properties ➞ font-variant ➞ no-contextual Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  163. css ➞ properties ➞ font-variant ➞ no-discretionary-ligatures Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  164. css ➞ properties ➞ font-variant ➞ no-historical-ligatures Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  165. css ➞ properties ➞ font-variant ➞ oldstyle-nums Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  166. css ➞ properties ➞ font-variant ➞ ordinal Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  167. css ➞ properties ➞ font-variant ➞ petite-caps Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  168. css ➞ properties ➞ font-variant ➞ proportional-nums Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  169. css ➞ properties ➞ font-variant ➞ proportional-width Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  170. css ➞ properties ➞ font-variant ➞ ruby Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  171. css ➞ properties ➞ font-variant ➞ simplified Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  172. css ➞ properties ➞ font-variant ➞ slashed-zero Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  173. css ➞ properties ➞ font-variant ➞ small-caps Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  174. css ➞ properties ➞ font-variant ➞ stacked-fractions Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  175. css ➞ properties ➞ font-variant ➞ tabular-nums Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  176. css ➞ properties ➞ font-variant ➞ text Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  177. css ➞ properties ➞ font-variant ➞ titling-caps Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  178. css ➞ properties ➞ font-variant ➞ traditional Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  179. css ➞ properties ➞ font-variant ➞ unicase Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  180. css ➞ properties ➞ font-variant ➞ unicode Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  181. css ➞ properties ➞ hyphenate-limit-lines Spec link
    Backfilled for Safari  ➞  1 of 3 engines
  182. css ➞ properties ➞ hyphenate-limit-lines ➞ no-limit Spec link
    Backfilled for Safari  ➞  1 of 3 engines
  183. css ➞ properties ➞ mask ➞ add Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  184. css ➞ properties ➞ mask ➞ alpha Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  185. css ➞ properties ➞ mask ➞ border-box Spec link
    Backfilled for Firefox  ➞  2 of 3 engines
  186. css ➞ properties ➞ mask ➞ bottom Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  187. css ➞ properties ➞ mask ➞ center Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  188. css ➞ properties ➞ mask ➞ content-box Spec link
    Backfilled for Firefox  ➞  2 of 3 engines
  189. css ➞ properties ➞ mask ➞ exclude Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  190. css ➞ properties ➞ mask ➞ fill-box Spec link
    Backfilled for Firefox  ➞  2 of 3 engines
  191. css ➞ properties ➞ mask ➞ intersect Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  192. css ➞ properties ➞ mask ➞ left Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  193. css ➞ properties ➞ mask ➞ luminance Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  194. css ➞ properties ➞ mask ➞ match-source Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  195. css ➞ properties ➞ mask ➞ no-clip Spec link
    Backfilled for Firefox  ➞  2 of 3 engines
  196. css ➞ properties ➞ mask ➞ no-repeat Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  197. css ➞ properties ➞ mask ➞ none Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  198. css ➞ properties ➞ mask ➞ padding-box Spec link
    Backfilled for Firefox  ➞  2 of 3 engines
  199. css ➞ properties ➞ mask ➞ repeat Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  200. css ➞ properties ➞ mask ➞ repeat-x Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  201. css ➞ properties ➞ mask ➞ repeat-y Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  202. css ➞ properties ➞ mask ➞ right Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  203. css ➞ properties ➞ mask ➞ round Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  204. css ➞ properties ➞ mask ➞ space Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  205. css ➞ properties ➞ mask ➞ stroke-box Spec link
    Backfilled for Firefox  ➞  2 of 3 engines
  206. css ➞ properties ➞ mask ➞ subtract Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  207. css ➞ properties ➞ mask ➞ top Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  208. css ➞ properties ➞ mask ➞ view-box Spec link
    Backfilled for Firefox  ➞  2 of 3 engines
  209. css ➞ properties ➞ mask-border ➞ none Spec link
    Backfilled for Chrome  ➞  2 of 3 engines
  210. css ➞ properties ➞ mask-border ➞ repeat Spec link
    Backfilled for Chrome  ➞  2 of 3 engines
  211. css ➞ properties ➞ mask-border ➞ round Spec link
    Backfilled for Chrome  ➞  2 of 3 engines
  212. css ➞ properties ➞ mask-border ➞ space Spec link
    Backfilled for Chrome  ➞  2 of 3 engines
  213. css ➞ properties ➞ mask-border ➞ stretch Spec link
    Backfilled for Chrome  ➞  2 of 3 engines
  214. css ➞ properties ➞ mask-border-repeat ➞ repeat Spec link
    Backfilled for Chrome  ➞  2 of 3 engines
  215. css ➞ properties ➞ mask-border-repeat ➞ round Spec link
    Backfilled for Chrome  ➞  2 of 3 engines
  216. css ➞ properties ➞ mask-border-repeat ➞ space Spec link
    Backfilled for Chrome  ➞  2 of 3 engines
  217. css ➞ properties ➞ mask-border-repeat ➞ stretch Spec link
    Backfilled for Chrome  ➞  2 of 3 engines
  218. css ➞ properties ➞ mask-border-source ➞ none Spec link
    Backfilled for Chrome  ➞  2 of 3 engines
  219. css ➞ properties ➞ mask-border-width ➞ auto Spec link
    Backfilled for Chrome  ➞  2 of 3 engines
  220. css ➞ properties ➞ mask-image ➞ none Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  221. css ➞ properties ➞ mask-position ➞ bottom Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  222. css ➞ properties ➞ mask-position ➞ center Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  223. css ➞ properties ➞ mask-position ➞ left Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  224. css ➞ properties ➞ mask-position ➞ right Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  225. css ➞ properties ➞ mask-position ➞ top Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  226. css ➞ properties ➞ mask-repeat ➞ no-repeat Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  227. css ➞ properties ➞ mask-repeat ➞ repeat Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  228. css ➞ properties ➞ mask-repeat ➞ repeat-x Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  229. css ➞ properties ➞ mask-repeat ➞ repeat-y Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  230. css ➞ properties ➞ mask-repeat ➞ round Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  231. css ➞ properties ➞ mask-repeat ➞ space Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  232. css ➞ properties ➞ mask-size ➞ auto Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  233. css ➞ properties ➞ mask-size ➞ contain Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  234. css ➞ properties ➞ mask-size ➞ cover Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  235. css ➞ properties ➞ size Spec link
    Backfilled for Safari  ➞  1 of 3 engines
  236. css ➞ properties ➞ size ➞ auto Spec link
    Backfilled for Safari  ➞  1 of 3 engines
  237. css ➞ properties ➞ size ➞ fit-content Spec link
    Backfilled for Safari  ➞  1 of 3 engines
  238. css ➞ properties ➞ size ➞ max-content Spec link
    Backfilled for Safari  ➞  1 of 3 engines
  239. css ➞ properties ➞ size ➞ min-content Spec link
    Backfilled for Safari  ➞  1 of 3 engines
  240. css ➞ properties ➞ size ➞ stretch Spec link
    Backfilled for Safari  ➞  1 of 3 engines
  241. css ➞ properties ➞ tab-size ➞ is_animatable Spec link
    Backfilled for Firefox  ➞  2 of 3 engines
  242. css ➞ selectors ➞ navigation-source Spec link
    Backfilled for Chrome  ➞  1 of 3 engines
  243. css ➞ types ➞ anchor ➞ is_animatable Spec link
    Backfilled for Chrome  ➞  2 of 3 engines
  244. css ➞ types ➞ anchor-size ➞ is_animatable Spec link
    Backfilled for Chrome  ➞  2 of 3 engines
  245. css ➞ types ➞ line-width
    Backfilled for Firefox  ➞  3 of 3 engines

HTML

  1. html ➞ elements ➞ link ➞ rel ➞ expect Spec link
    Backfilled for Safari  ➞  2 of 3 engines

HTTP

  1. http ➞ headers ➞ Cross-Origin-Embedder-Policy ➞ report-to_parameter Spec link
    Backfilled for Safari  ➞  2 of 3 engines
  2. http ➞ headers ➞ Cross-Origin-Opener-Policy ➞ report-to_parameter Spec link
    Backfilled for Safari  ➞  2 of 3 engines

JAVASCRIPT

  1. javascript ➞ builtins ➞ FinalizationRegistry ➞ unregister ➞ symbol_as_target Spec link
    Backfilled for Firefox  ➞  3 of 3 engines

WEBDRIVER

  1. webdriver ➞ bidi ➞ session ➞ new ➞ multiple_sessions
    Backfilled for Chrome  ➞  1 of 3 engines

New entries (129)

The entries in this section were not found in BCD on Monday, 21 September 2026, but are now present. These usually do not have any support information attached to them, and often have no corresponding MDN page. Sometimes, entries that appear here also appear in the next section (“Removed BCD entries”) because of a Working Group deciding on a rename.

API

  1. api ➞ AutofillEvent
  2. api ➞ AutofillEvent ➞ autofillValues
  3. api ➞ AutofillEvent ➞ refill
  4. api ➞ Sanitizer ➞ setJavascriptURLs
  5. api ➞ SubtleCrypto ➞ getPublicKey
  6. api ➞ SubtleCrypto ➞ supports_static
  7. api ➞ USB ➞ requestDevice ➞ options_exclusionFilters_parameter

CSS

  1. css ➞ properties ➞ background ➞ text
  2. css ➞ properties ➞ background-blend-mode ➞ plus-lighter
  3. css ➞ properties ➞ background-position-x ➞ center
  4. css ➞ properties ➞ background-position-x ➞ left
  5. css ➞ properties ➞ background-position-x ➞ right
  6. css ➞ properties ➞ background-position-y ➞ bottom
  7. css ➞ properties ➞ background-position-y ➞ center
  8. css ➞ properties ➞ background-position-y ➞ top
  9. css ➞ properties ➞ clip-path ➞ none
  10. css ➞ properties ➞ content-visibility ➞ is_animatable
  11. css ➞ properties ➞ continue ➞ -webkit-legacy
  12. css ➞ properties ➞ display ➞ is_animatable
  13. css ➞ properties ➞ font-size ➞ large
  14. css ➞ properties ➞ font-size ➞ larger
  15. css ➞ properties ➞ font-size ➞ medium
  16. css ➞ properties ➞ font-size ➞ small
  17. css ➞ properties ➞ font-size ➞ smaller
  18. css ➞ properties ➞ font-size ➞ x-large
  19. css ➞ properties ➞ font-size ➞ x-small
  20. css ➞ properties ➞ font-size ➞ xx-large
  21. css ➞ properties ➞ font-size ➞ xx-small
  22. css ➞ properties ➞ font-variant ➞ all-petite-caps
  23. css ➞ properties ➞ font-variant ➞ all-small-caps
  24. css ➞ properties ➞ font-variant ➞ common-ligatures
  25. css ➞ properties ➞ font-variant ➞ contextual
  26. css ➞ properties ➞ font-variant ➞ diagonal-fractions
  27. css ➞ properties ➞ font-variant ➞ discretionary-ligatures
  28. css ➞ properties ➞ font-variant ➞ emoji
  29. css ➞ properties ➞ font-variant ➞ full-width
  30. css ➞ properties ➞ font-variant ➞ historical-ligatures
  31. css ➞ properties ➞ font-variant ➞ jis04
  32. css ➞ properties ➞ font-variant ➞ jis78
  33. css ➞ properties ➞ font-variant ➞ jis83
  34. css ➞ properties ➞ font-variant ➞ jis90
  35. css ➞ properties ➞ font-variant ➞ lining-nums
  36. css ➞ properties ➞ font-variant ➞ no-common-ligatures
  37. css ➞ properties ➞ font-variant ➞ no-contextual
  38. css ➞ properties ➞ font-variant ➞ no-discretionary-ligatures
  39. css ➞ properties ➞ font-variant ➞ no-historical-ligatures
  40. css ➞ properties ➞ font-variant ➞ oldstyle-nums
  41. css ➞ properties ➞ font-variant ➞ ordinal
  42. css ➞ properties ➞ font-variant ➞ petite-caps
  43. css ➞ properties ➞ font-variant ➞ proportional-nums
  44. css ➞ properties ➞ font-variant ➞ proportional-width
  45. css ➞ properties ➞ font-variant ➞ ruby
  46. css ➞ properties ➞ font-variant ➞ simplified
  47. css ➞ properties ➞ font-variant ➞ slashed-zero
  48. css ➞ properties ➞ font-variant ➞ small-caps
  49. css ➞ properties ➞ font-variant ➞ stacked-fractions
  50. css ➞ properties ➞ font-variant ➞ tabular-nums
  51. css ➞ properties ➞ font-variant ➞ text
  52. css ➞ properties ➞ font-variant ➞ titling-caps
  53. css ➞ properties ➞ font-variant ➞ traditional
  54. css ➞ properties ➞ font-variant ➞ unicase
  55. css ➞ properties ➞ font-variant ➞ unicode
  56. css ➞ properties ➞ hyphenate-limit-lines
  57. css ➞ properties ➞ hyphenate-limit-lines ➞ no-limit
  58. css ➞ properties ➞ mask ➞ add
  59. css ➞ properties ➞ mask ➞ alpha
  60. css ➞ properties ➞ mask ➞ border-box
  61. css ➞ properties ➞ mask ➞ bottom
  62. css ➞ properties ➞ mask ➞ center
  63. css ➞ properties ➞ mask ➞ content-box
  64. css ➞ properties ➞ mask ➞ exclude
  65. css ➞ properties ➞ mask ➞ fill-box
  66. css ➞ properties ➞ mask ➞ intersect
  67. css ➞ properties ➞ mask ➞ left
  68. css ➞ properties ➞ mask ➞ luminance
  69. css ➞ properties ➞ mask ➞ match-source
  70. css ➞ properties ➞ mask ➞ no-clip
  71. css ➞ properties ➞ mask ➞ no-repeat
  72. css ➞ properties ➞ mask ➞ none
  73. css ➞ properties ➞ mask ➞ padding-box
  74. css ➞ properties ➞ mask ➞ repeat
  75. css ➞ properties ➞ mask ➞ repeat-x
  76. css ➞ properties ➞ mask ➞ repeat-y
  77. css ➞ properties ➞ mask ➞ right
  78. css ➞ properties ➞ mask ➞ round
  79. css ➞ properties ➞ mask ➞ space
  80. css ➞ properties ➞ mask ➞ stroke-box
  81. css ➞ properties ➞ mask ➞ subtract
  82. css ➞ properties ➞ mask ➞ top
  83. css ➞ properties ➞ mask ➞ view-box
  84. css ➞ properties ➞ mask-border ➞ none
  85. css ➞ properties ➞ mask-border ➞ repeat
  86. css ➞ properties ➞ mask-border ➞ round
  87. css ➞ properties ➞ mask-border ➞ space
  88. css ➞ properties ➞ mask-border ➞ stretch
  89. css ➞ properties ➞ mask-border-repeat ➞ repeat
  90. css ➞ properties ➞ mask-border-repeat ➞ round
  91. css ➞ properties ➞ mask-border-repeat ➞ space
  92. css ➞ properties ➞ mask-border-repeat ➞ stretch
  93. css ➞ properties ➞ mask-border-source ➞ none
  94. css ➞ properties ➞ mask-border-width ➞ auto
  95. css ➞ properties ➞ mask-image ➞ none
  96. css ➞ properties ➞ mask-position ➞ bottom
  97. css ➞ properties ➞ mask-position ➞ center
  98. css ➞ properties ➞ mask-position ➞ left
  99. css ➞ properties ➞ mask-position ➞ right
  100. css ➞ properties ➞ mask-position ➞ top
  101. css ➞ properties ➞ mask-repeat ➞ no-repeat
  102. css ➞ properties ➞ mask-repeat ➞ repeat
  103. css ➞ properties ➞ mask-repeat ➞ repeat-x
  104. css ➞ properties ➞ mask-repeat ➞ repeat-y
  105. css ➞ properties ➞ mask-repeat ➞ round
  106. css ➞ properties ➞ mask-repeat ➞ space
  107. css ➞ properties ➞ mask-size ➞ auto
  108. css ➞ properties ➞ mask-size ➞ contain
  109. css ➞ properties ➞ mask-size ➞ cover
  110. css ➞ properties ➞ size
  111. css ➞ properties ➞ size ➞ auto
  112. css ➞ properties ➞ size ➞ fit-content
  113. css ➞ properties ➞ size ➞ max-content
  114. css ➞ properties ➞ size ➞ min-content
  115. css ➞ properties ➞ size ➞ stretch
  116. css ➞ properties ➞ tab-size ➞ is_animatable
  117. css ➞ selectors ➞ navigation-source
  118. css ➞ types ➞ anchor ➞ is_animatable
  119. css ➞ types ➞ anchor-size ➞ is_animatable
  120. css ➞ types ➞ line-width

WEBDRIVER

  1. webdriver ➞ bidi ➞ browsingContext ➞ startScreencast ➞ destinationFolder_parameter
  2. webdriver ➞ bidi ➞ session ➞ new ➞ multiple_sessions

Removed entries (14)

The entries in this section were found in BCD on Monday, 21 September 2026, but are no longer present. The reasons for this removal can be anything from an experimental proposal that was never supported to a property or value being renamed to something else.

API

  1. api ➞ Element ➞ replaceHTML
  2. api ➞ Element ➞ replaceHTMLUnsafe
  3. api ➞ Element ➞ streamReplaceHTML
  4. api ➞ Element ➞ streamReplaceHTMLUnsafe
  5. api ➞ Screen ➞ mozBrightness
  6. api ➞ Screen ➞ mozEnabled

CSS

  1. css ➞ properties ➞ content ➞ none_applies_to_elements
  2. css ➞ properties ➞ content-visibility ➞ is_transitionable
  3. css ➞ properties ➞ content-visibility ➞ keyframe_animatable
  4. css ➞ properties ➞ display ➞ is_transitionable
  5. css ➞ properties ➞ display ➞ keyframe_animatable
  6. css ➞ selectors ➞ -moz-submit-invalid
  7. css ➞ types ➞ anchor ➞ is_transitionable
  8. css ➞ types ➞ anchor-size ➞ is_transitionable