1. css property: mask-border

2. css property: mask-border-outset

3. css property: mask-border-repeat

4. css property: mask-border-slice

5. css property: mask-border-source

6. css property: mask-border-width

7. css property: mask-clip

8. css property: mask-clip: border

9. css property: mask-clip: border-box

10. css property: mask-clip: content

11. css property: mask-clip: content-box

12. css property: mask-clip: fill-box

13. css property: mask-clip: no-clip

14. css property: mask-clip: padding

15. css property: mask-clip: padding-box

16. css property: mask-clip: stroke-box

17. css property: mask-clip: text

18. css property: mask-clip: view-box

19. css property: mask-composite

20. css property: mask-composite: add

21. css property: mask-composite: exclude

22. css property: mask-composite: intersect

23. css property: mask-composite: subtract

24. css property: mask-image

25. css property: mask-image: multiple mask images

26. css property: mask-image: svg masks

27. css property: mask-mode

28. css property: mask-mode: alpha

29. css property: mask-mode: luminance

30. css property: mask-mode: match-source

31. css property: mask-origin

32. css property: mask-origin: border

33. css property: mask-origin: border-box

34. css property: mask-origin: content

35. css property: mask-origin: content-box

36. css property: mask-origin: fill-box

37. css property: mask-origin: padding

38. css property: mask-origin: padding-box

39. css property: mask-origin: stroke-box

40. css property: mask-origin: view-box

41. css property: mask-position

42. css property: mask-position: x-end

43. css property: mask-position: x-start

44. css property: mask-position: y-end

45. css property: mask-position: y-start

46. css property: mask-repeat

47. css property: mask-size

48. css property: mask-type

49. css property: mask-type: alpha

50. css property: mask-type: luminance