This is piece is an example of pop art, likely imitating comic strip illustration. The underlying theme of a woman who is unstoppable while remaining feminine is synonymous with "lipstick feminism", which had its beginnings in the
A theme developing in the story is sad marriage. Torvald and Nora have an awkward relationship and don't have the guts to express one another feelings. If this continues throughout the story, their marriage will fall apart.