One of the biggest changes in the 1970s was the way people thought about space.
Traditional interiors had often been structured around formal furniture arrangements. Sofas faced each other. Dining rooms had fixed functions. Furniture tended to define how a room should be used.
Italian designers increasingly challenged that idea.
Seating became lower, softer and more modular. Sofas could spread across a room rather than sit neatly against a wall. Chairs became more relaxed. Living spaces began to feel less ceremonial and more adaptable.
This shift made interiors feel younger and more social.
It is also one reason they still look modern today. Contemporary homes continue to favour open spaces, flexible furniture and informal ways of living.