Strid originally trained as a professional painter, experimenting with Surrealism in the 1930s following the movement’s introduction to the Swedish art scene by the Halmstad Group. He was tutored by Waldemar Lorentzon, one of the Group’s members from 1941 to 1945. From 1947 to 1952 he studied under Endre Nemes at Valand's Painting School in Gothenburg.

He travelled widely, painting and studying across the Continent including a period learning glass painting in England with stained glass designer Tom Fairs (1925-2011). He held a number of exhibitions in commercial galleries in Sweden, Lubeck, Edinburgh and participated in the colour lithography biennial in Cincinnati in 1954. During the 1960s he was active in the Situationist International and later, together with Jørgen Nash, in the second Situationist International. He co-founded Drakabygget together with Jørgen Nash and Asger Jorn in the early 1960s.

His work is represented in the Moderna Museet in Stockholm, Gothenburg Art Museum, Kalmar Art Museum, Norrköping Art Museum, Halland Art Museum, Värmland Museum, ARKEN Museum for Moderne Kunst in Copenhagen, Cincinnati Art Museum, Museum Jorn in Silkeborg, and KUNSTEN, Museum of Modern Art Aalborg.