MDN’s new design is in Beta! A sneak peek:

Type: one of the values below
Used to specify whether the separator is a horizontal or vertical separator. Note that the values are the reverse of what seems more likely.
The separator separates vertically placed elements.
The separator separates horizontally placed elements.

See also

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 Contributors to this page: Sheppy, pippijn, Marsf, Mgjbot, Ptak82, Dria
 Last updated by: Sheppy,