One side of a cell border: a line style and a colour.
Summary
Types
@type style() :: :none | :thin | :medium | :dashed | :dotted | :thick | :double | :hair | :mediumDashed | :dashDot | :mediumDashDot | :dashDotDot | :mediumDashDotDot | :slantDashDot | atom()
@type t() :: %ExVEx.Style.Side{color: ExVEx.Style.Color.t() | nil, style: style()}