1. CSS Flexible Box Layout Module

    Method of positioning elements in horizontal or vertical stacks. Support includes all properties prefixed with `flex`, as well as `display: flex`, `display: inline-flex`, `align-content`, `align-items`, `align-self`, `justify-content` and `order`.

  2. Element.getBoundingClientRect()

    Method to get the size and position of an element's bounding box, relative to the viewport.

  3. Directory selection from file input

    The `webkitdirectory` attribute on the `<input type="file">` element allows entire directory with file contents (and any subdirectories) to be selected.

  4. SVG (basic support)

    Method of displaying basic Vector Graphics features using the embed or object elements. Refers to the SVG 1.1 spec.

  5. canvasrenderingcontext2d api: rect

  6. directory api

  7. directoryentrysync api

  8. directoryreadersync api

  9. directory api: getfiles

  10. directory api: getfilesanddirectories

  11. directory api: name

  12. directory api: path

  13. domrect api

  14. domrectlist api

  15. domrect api: width

  16. domrect api: x

  17. domrect api: y

  18. offscreencanvasrenderingcontext2d api: rect

  19. path2d api: rect

  20. rect api

  21. rect api: bottom

  22. rect api: left

  23. rect api: right

  24. rect api: top

  25. svgrect api

  26. svgrectelement api

  27. svgrect api: width

  28. svgrect api: x

  29. svgrect api: y

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

  31. css property: break-after: supported in paged media: `recto` and `verso`

  32. css property: break-after: recto

  33. css property: break-before: supported in paged media: `recto` and `verso`

  34. css property: break-before: recto

  35. types: `-moz-image-rect()`

  36. types: `<basic-shape>`: `rect()`

  37. types: `<shape>`: `rect()`

  38. svg element: rect

  39. svg element: rect: fill

  40. svg element: rect: fill: `context-fill` value

  41. svg element: rect: height

  42. svg element: rect: rx

  43. svg element: rect: ry

  44. svg element: rect: systemlanguage

  45. svg element: rect: width

  46. svg element: rect: x

  47. svg element: rect: y