1. CSS Backdrop Filter

    Method of applying filter effects (like blur, grayscale or hue) to content/elements below the target element.

  2. CSS Filter Effects

    Method of applying filter effects using the `filter` property to elements, matching filters available in SVG. Filter functions include blur, brightness, contrast, drop-shadow, grayscale, hue-rotate, invert, opacity, sepia and saturate.

  3. ::first-letter CSS pseudo-element selector

    CSS pseudo-element that allows styling only the first "letter" of text within an element. Useful for implementing initial caps or drop caps styling.

  4. CSS Initial Letter

    Method of creating an enlarged cap, including a drop or raised cap, in a robust way.

  5. CSS3 Cursors (original values)

    CSS3 cursor values added in the 2004 spec, including none, context-menu, cell, vertical-text, alias, copy, no-drop, not-allowed, nesw-resize, nwse-resize, col-resize, row-resize and all-scroll.

  6. Dialog element

    Method of easily creating custom dialog boxes to display to the user with modal or non-modal options. Also includes a `::backdrop` pseudo-element for behind the element.

  7. Drag and Drop

    Method of easily dragging and dropping elements on a page, requiring minimal JavaScript.

  8. datatransfer api: dropeffect

  9. eyedropper api

  10. eyedropper api: `eyedropper()` constructor

  11. eyedropper api: open

  12. eyedropper api: secure context required

  13. htmlelement api: `drop` event

  14. performanceobserver api: `performanceobserver()` constructor: `droppedentriescount()` parameter

  15. svgfedropshadowelement api

  16. svgfedropshadowelement api: dx

  17. svgfedropshadowelement api: dy

  18. svgfedropshadowelement api: height

  19. svgfedropshadowelement api: in1

  20. svgfedropshadowelement api: result

  21. svgfedropshadowelement api: setstddeviation

  22. svgfedropshadowelement api: stddeviationx

  23. svgfedropshadowelement api: stddeviationy

  24. svgfedropshadowelement api: width

  25. svgfedropshadowelement api: x

  26. svgfedropshadowelement api: y

  27. videoplaybackquality api: droppedvideoframes

  28. css at-rule: `@font-face`: src: drop invalid item (not src string)

  29. css property: cursor: no-drop

  30. css selector: `::backdrop`

  31. css selector: `::backdrop`: support on `dialog` elements

  32. css selector: `::backdrop`: fullscreen support

  33. css selector: `::backdrop`: backdrop elements inherit their values from its originating element

  34. css selector: `::backdrop`: support on popovers

  35. types: filter-function: `drop-shadow()`

  36. javascript built-in: iterator: drop

  37. svg element: fedropshadow

  38. svg element: fedropshadow: dx

  39. svg element: fedropshadow: dy

  40. svg element: fedropshadow: in

  41. svg element: fedropshadow: stddeviation

  42. background-filter