One of "blue", "indigo", "purple", "red", "orange", "yellow", "green", "teal", "cyan", or "white" specifying the border
color.
sides
One or more of "top", "t", "right", "r", "bottom", "b", "left", "l", "all", or "none" specifying
which sides to add borders to, defaults to TRUE. TRUE and FALSE may
be used as shorthand for all sides or no sides, respectively.
width
One or more of 1, 2, 3, 4, or 5 specifying the width
of the element's border, defaults to 1.
round
One of "small", "sm", "medium", "md", "large", "lg", or "none" specifying how to round
the corners of the element, defaults to "medium".