The 70s portion includes bellbottoms, halter top catsuits and platform shoes, along with minimalist furniture and a disco ball. The 80s bring legwarmers, leotards, headbands and shoulder pads, and the decor portion includes arcade machines and an entertainment system. The 90s remind us why "grunge" generally isn't a complimentary term, with tattered jeans, layered tops, asymmetrical handkerchief hemline skirts, and furniture in distressed and industrial metal styles. Each decade comes with the related hairstyles and facial hair.
Remember, in 20 years we'll all look back on the 2010s with just as much revulsion, but with more photographic evidence of our absurd tastes.