1. CSS background-attachment

    Method of defining how a background image is attached to a scrollable element. Values include `scroll` (default), `fixed` and `local`.

  2. Background-clip: text

    Clipping a background image to the foreground text.

  3. CSS3 Background-image options

    New properties to affect background images, including background-clip, background-origin and background-size

  4. background-position-x & background-position-y

    CSS longhand properties to define x or y positions separately.

  5. CSS background-repeat round and space

    Allows CSS background images to be repeated without clipping.

  6. Background Sync API

    Provides one-off and periodic synchronization for Service Workers with an onsync event.

  7. CSS background-position edge offsets

    Allows CSS background images to be positioned relative to the specified edge using the 3 to 4 value syntax. For example: `background-position: right 5px bottom 5px;` for positioning 5px from the bottom-right corner.

  8. CSS background-blend-mode

    Allows blending between CSS background images, gradients, and colors.

  9. CSS3 Multiple backgrounds

    Method of using multiple images as a background

  10. SVG in CSS backgrounds

    Method of using SVG images as CSS backgrounds

  11. backgroundfetchevent api

  12. backgroundfetchevent api: registration

  13. backgroundfetchmanager api

  14. backgroundfetchmanager api: fetch

  15. backgroundfetchmanager api: get

  16. backgroundfetchmanager api: getids

  17. backgroundfetchrecord api

  18. backgroundfetchrecord api: request

  19. backgroundfetchrecord api: responseready

  20. backgroundfetchregistration api

  21. backgroundfetchregistration api: abort

  22. backgroundfetchregistration api: downloaded

  23. backgroundfetchregistration api: downloadtotal

  24. backgroundfetchregistration api: failurereason

  25. backgroundfetchregistration api: id

  26. backgroundfetchregistration api: match

  27. backgroundfetchregistration api: matchall

  28. backgroundfetchregistration api: `progress` event

  29. backgroundfetchregistration api: recordsavailable

  30. backgroundfetchregistration api: result

  31. backgroundfetchregistration api: uploaded

  32. backgroundfetchregistration api: uploadtotal

  33. backgroundfetchupdateuievent api

  34. backgroundfetchupdateuievent api: updateui

  35. css property: background

  36. css property: background-color

  37. css property: background-image

  38. css property: background-image: none

  39. css property: background-origin

  40. css property: background-position

  41. css property: background-position-y

  42. css property: background-repeat

  43. css property: background-repeat: round

  44. css property: background-repeat: space

  45. css property: background-size

  46. css property: background-size: auto

  47. css property: background-size: contain

  48. css property: background-size: cover

  49. manifest: background_color

  50. background-filter