::cue (:cue)

:: cue CSS伪元素匹配所选元素中的WebVTT提示。这可以用于在VTT轨道的媒体中使用字幕和其他线索。

只有CSS一小部分属性可以与 :: cue 伪元素一起使用：

属性应用于整个提示集，就像它们是单个单元一样。唯一的例外是背景及其简写属性可以单独应用于每个提示，以避免创建框并遮盖意外大面积的媒体。

语法


::cue | ::cue( <selector> )

示例

以下CSS设置提示样式，使文本为白色，背景为半透明黑盒。


::cue {
  color: #fff;
  background-color: rgba(0, 0, 0, 0.6);
}

规范

规范 状态 注解
WebVTT: The Web Video Text Tracks Format Candidate Recommendation Initial definition

浏览器兼容性

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
::cueChrome Full support 26Edge No support NoFirefox Full support 55
Notes
Full support 55
Notes
Notes Firefox currently does not support a parameter on ::cue.
Notes Correct limitations to the CSS properties permitted within ::cue were implemented in Firefox 69. See Permitted properties for a list of the allowed properties.
IE No support NoOpera Full support 15Safari Full support 6.1WebView Android Full support ≤37Chrome Android Full support 26Firefox Android Full support 55
Notes
Full support 55
Notes
Notes Firefox currently does not support a parameter on ::cue.
Opera Android Full support 14Safari iOS Full support 6.1Samsung Internet Android Full support 1.5

Legend

Full support  
Full support
No support  
No support
See implementation notes.
See implementation notes.

参考

相关主题
  1. CSS
  2. CSS 参考
  3. CSS Selectors
  4. Guides
    1. 在选择器中使用 :target 伪类
  5. 属性
    1. Selector list
  6. Basic Selectors
    1. 元素选择器
    2. 类选择器
    3. ID选择器
    4. 通配选择器
    5. 属性选择器
  7. Combinators
    1. 相邻兄弟选择器
    2. 通用兄弟选择器
    3. 子选择器
    4. 后代选择器
    5. Column combinator
  8. Pseudo-classes
    1. :active
    2. :any-link
    3. :checked
    4. :blank
    5. :default
    6. :defined
    7. :dir()
    8. :disabled
    9. :empty
    10. :enabled
    11. :first
    12. :first-child
    13. :first-of-type
    14. :fullscreen
    15. :focus
    16. :focus-visible
    17. :focus-within
    18. :has
    19. :host()
    20. :host-context()
    21. :hover
    22. :indeterminate
    23. :in-range
    24. :invalid
    25. :is() (:matches(), :any())
    26. :lang
    27. :last-child
    28. :last-of-type
    29. :left
    30. :link
    31. :not()
    32. :nth-child
    33. :nth-last-child
    34. :nth-last-of-type
    35. :nth-of-type
    36. :only-child
    37. :only-of-type
    38. :optional
    39. :out-of-range
    40. :placeholder-shown
    41. :read-only
    42. :read-write
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    45. :root
    46. :scope
    47. :target
    48. :valid
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    50. :where() - The specificity adjustment pseudo-class
  9. Pseudo-elements
    1. ::-moz-progress-bar
    2. ::-moz-range-progress [我来译!]
    3. ::-moz-range-thumb [我来译!]
    4. ::-moz-range-track [我来译!]
    5. ::-ms-browse [我来译!]
    6. ::-ms-check
    7. ::-ms-clear
    8. ::-ms-expand [我来译!]
    9. ::-ms-fill [我来译!]
    10. ::-ms-fill-lower [我来译!]
    11. ::-ms-fill-upper [我来译!]
    12. ::-ms-reveal [我来译!]
    13. ::-ms-thumb [我来译!]
    14. ::-ms-ticks-after [我来译!]
    15. ::-ms-ticks-before [我来译!]
    16. ::-ms-tooltip [我来译!]
    17. ::-ms-track [我来译!]
    18. ::-ms-value [我来译!]
    19. ::-webkit-progress-bar
    20. ::-webkit-progress-value [我来译!]
    21. ::-webkit-slider-runnable-track
    22. ::-webkit-slider-thumb
    23. ::after (:after)
    24. ::backdrop
    25. ::before (:before)
    26. ::cue (:cue)
    27. ::first-letter (:first-letter)
    28. ::first-line (:first-line)
    29. ::grammar-error
    30. ::marker
    31. ::part() [我来译!]
    32. ::placeholder
    33. ::selection
    34. ::slotted()
    35. ::spelling-error