Defines the style of the element's borders.
default border-style: none;
Removes the element's borders.
border-style: dotted;
Turns the border into a sequence of dots.
border-style: dashed;
Turns the border into a sequence of dashes.
border-style: solid;
Turns the border into a solid line.
border-style: double;
Splits the border into two lines.
border-style: groove;
Sets an inset style to the borders.