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 property: border-top-left-radius

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

  4. css property: border-top-left-radius: percentages