It was the work of Ludwig Prandtl, and was the culmination of WWI
design. It had long, narrow wings for a superior lift-to-drag ratio.
The wings had blunt leading edges, which generated more lift (other
Prandtl designs also used this feature) especially a high angles of
attack, so it was less likely to stall out. The thicker airfoil also
allowed interior bracing, so the D VIII needed no struts or wires. (It
was given one, for psychological reasons, but was still much cleaner
than the other aircraft of the time.)

The Armistice document listed the war material that Germany was
required to turn over. Only one aircraft was named, the Fokker D VIII.

You're confusing the D VII (biplane, probably the best all-around fighter of
the war) with the D VIII (parasol monoplane with rotary engine, not as well
regarded).

R / John