In Christa Kieffer’s romantic “Dinner on the Terrace,” a beautiful dinner spot with a magical view is given luminosity and depth by the artist’s use of oil paints layered with glaze. Enchantingly portraying Paris, Kieffer casts spellbinding transitions of light, during the splendor and elegance of the “Beautiful Era.” Kieffer, who was born in Germany, designed images for numerous well-known companies before becoming an easel painter.