Answer:
The scenario you described, with Victor and Elizabeth lying on a stony slope by the steps at night, looking at the stars and contemplating the great beyond and unknown, would best classify as a Romantic element. This scene reflects a sense of wonder, connection with nature, and contemplation of the mysteries of the universe, which are characteristic themes of the Romantic literary and artistic movement. Gothic elements typically involve darker and more ominous themes, often with a focus on the mysterious and supernatural, which is not as prominent in this scenario.