1. css property: background

2. css property: background-attachment: fixed

3. css property: background-attachment: local

4. css property: background-attachment: multiple backgrounds

5. css property: background-attachment: scroll

6. css property: background-clip: border-box

7. css property: background-clip: content-box

8. css property: background-clip: padding-box

9. css property: background-color

10. css property: background-image

11. css property: background-image: `element()`

12. css property: background-image: gradients

13. css property: background-image: `image-rect()`

14. css property: background-image: `image-set()`

15. css property: background-image: multiple backgrounds

16. css property: background-image: none

17. css property: background-image: svg images

18. css property: background-origin

19. css property: background-origin: border-box

20. css property: background-origin: content-box

21. css property: background-origin: padding-box

22. css property: background-position

23. css property: background-position-x: side-relative values (such as `bottom 10%`)

24. css property: background-position-y

25. css property: background-position-y: side-relative values (such as `bottom 10%`)

26. css property: background-position: bottom

27. css property: background-position: center

28. css property: background-position: left

29. css property: background-position: multiple backgrounds

30. css property: background-position: right

31. css property: background-position: side-relative values (such as `bottom 10% right 20%`)

32. css property: background-position: top

33. css property: background-repeat

34. css property: background-repeat: two-value syntax (different values for x & y directions)

35. css property: background-repeat: multiple backgrounds

36. css property: background-repeat: no-repeat

37. css property: background-repeat: repeat

38. css property: background-repeat: repeat-x

39. css property: background-repeat: repeat-y

40. css property: background-repeat: round

41. css property: background-repeat: space

42. css property: background-size

43. css property: background-size: auto

44. css property: background-size: contain

45. css property: background-size: cover

46. css property: background: values of `background-clip` longhand

47. css property: background: values of `background-origin` longhand

48. css property: background: values of `background-size` longhand

49. css property: background: multiple backgrounds

50. css property: background: svg image as background