The border-top-color CSS property sets the color of the top border of an element. Note that in many cases the shorthand CSS properties border-color or border-top are more convenient and preferable.
The border-top-left-radius CSS property sets the rounding of the top-left corner of the element. The rounding can be a circle or an ellipse, or if one of the value is 0,no rounding is done and the corner is square.
The border-top-right-radius CSS property sets the rounding of the top-right corner of the element. The rounding can be a circle or an ellipse, or if one of the value is 0 no rounding is done and the corner is square.
The borderCSS property is a shorthand property for setting the individual border property values in a single place in the style sheet. border can be used to set the values for one or more of: border-width, border-style, border-color.
The border-collapse CSS property determines whether a table's borders are separated or collapsed. In the separated model, adjacent cells each have their own distinct borders. In the collapsed model, adjacent table cells share borders.