1. classList (DOMTokenList)

    Method of easily manipulating classes on elements, using the `DOMTokenList` object.

  2. CSS Container Queries (Size)

    Size queries in Container Queries provide a way to query the size of a container, and conditionally apply CSS to the content of that container.

  3. CSS Container Style Queries

    Style queries in Container Queries provide a way to query the current styling of a container, and conditionally apply additional CSS to the contents of that container.

  4. CSS Container Query Units

    Container Query Units specify a length relative to the dimensions of a query container. The units include: `cqw`, `cqh`, `cqi`, `cqb`, `cqmin`, and `cqmax`.

  5. CSS Containment

    The CSS `contain` property lets developers limit the scope of the browser's styles, layout and paint work for faster and more efficient rendering.

  6. credentialscontainer api

  7. credentialscontainer api: create

  8. credentialscontainer api: create: `publickey` option

  9. credentialscontainer api: create: `publickey` option: `create()` extensions

  10. credentialscontainer api: create: `publickey` option: requireresidentkey

  11. credentialscontainer api: create: `publickey` option: residentkey

  12. credentialscontainer api: get

  13. credentialscontainer api: get: `identity` option

  14. credentialscontainer api: get: `publickey` option

  15. credentialscontainer api: get: `publickey` option: `get()` extensions

  16. credentialscontainer api: get: `publickey` option: `get()` extensions: `appid` extension

  17. credentialscontainer api: get: `publickey` option: `get()` extensions: `largeblob` extension

  18. credentialscontainer api: preventsilentaccess

  19. credentialscontainer api: store

  20. csscontainerrule api

  21. csscontainerrule api: containername

  22. csscontainerrule api: containerquery

  23. domstringlist api: contains

  24. domtokenlist api: contains

  25. node api: contains

  26. range api: endcontainer

  27. range api: startcontainer

  28. selection api: containsnode

  29. selection api: containsnode: `partialcontainment` parameter is optional

  30. taskattributiontiming api: containerid

  31. taskattributiontiming api: containername

  32. taskattributiontiming api: containersrc

  33. taskattributiontiming api: containertype

  34. css at-rule: `@container`

  35. css at-rule: `@container`: style queries for custom properties

  36. css property: background-size: `contain` and `cover`

  37. css property: contain

  38. css property: contain-intrinsic-block-size

  39. css property: contain-intrinsic-height

  40. css property: contain-intrinsic-inline-size

  41. css property: contain-intrinsic-size

  42. css property: contain-intrinsic-width

  43. css property: container

  44. css property: container-name

  45. css property: container-type

  46. css property: contain: inline-size

  47. css property: contain: style

  48. css property: user-select: contain

  49. types: `<length>`: container query length units `cqw`, `cqh`, `cqi`, `cqb`, `cqmin`, `cqmax`

  50. javascript built-in: intl: segments: containing