CSS border-bottom Property

The css border-bottom property is a shorthand property that defines the border-width, border-style and border-color of an element’s bottom border in a single declaration. Note that you can use the corresponding longhand properties to set specific individual properties of the bottom border — border-bottom-width, border-bottom-style and border-bottom-color.

Syntax for border-bottom property

[ border-width || border-style || 'border-top-color' ] | inherit