1. CSS3 Border-radius (rounded corners)

    Method of making the border corners round. Covers support for the shorthand `border-radius` as well as the long-hand properties (e.g. `border-top-left-radius`)

  2. 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.

  3. css at-rule: `@page`: `@bottom-left-corner` page-margin box

  4. css at-rule: `@page`: `@bottom-right-corner` page-margin box

  5. css at-rule: `@page`: `@top-left-corner` page-margin box

  6. css at-rule: `@page`: `@top-right-corner` page-margin box

  7. css property: border-bottom-left-radius: elliptical corners

  8. css property: border-bottom-right-radius: elliptical corners

  9. css property: border-radius: 4 values for 4 corners

  10. css property: border-top-left-radius: elliptical corners

  11. css property: border-top-right-radius: elliptical corners

  12. css selector: `::-webkit-scrollbar-corner`