.embed-responsive-2by1::before{aspect-ratio:2/1}.embed-responsive-24by10::before{aspect-ratio:24/10}.embed-responsive-24by14::before{aspect-ratio:24/14}.embed-responsive-24by20::before{aspect-ratio:24/20}.embed-responsive-31by48::before{aspect-ratio:31/48}.embed-responsive-48by29::before{aspect-ratio:48/29}.embed-responsive-48by35::before{aspect-ratio:48/35}.embed-responsive-8by5::before{aspect-ratio:8/5}