The term 'BACK-TO-THE-PAST STYLE' can be summarized as a RETRO style. RETRO is a term used to describe a style of fashion, design, and culture that is inspired by trends from the past. It often includes elements from the 1950s, 1960s, and 1970s, and is characterized by bright colors, bold patterns, and vintage silhouettes. RETRO style has become increasingly popular in recent years, with many people embracing the look for its nostalgic appeal.