We can set different styles,
widths and colours for the borders of
the different sides of an element.
We do this by specifying multiple values
for the same property, like
border-width: 3px 3px 4px 5px.
However, there are individual properties
such as border-top-style,
border-right-width, border-bottom-color
among others, for styling borders
for the specific sides:
For #second, we only specified the border-style for
the top and bottom sides.
And
the border-color values
have an effect only when border-style is specified.
This is why, in the #second div, the
border-color is only visible for the top
and
bottom sides.