.embed-responsive-19by48::before{aspect-ratio:19/48}.embed-responsive-2by1::before{aspect-ratio:2/1}.embed-responsive-24by11::before{aspect-ratio:24/11}.embed-responsive-24by23::before{aspect-ratio:24/23}.embed-responsive-24by7::before{aspect-ratio:24/7}.embed-responsive-4by1::before{aspect-ratio:4/1}.embed-responsive-48by17::before{aspect-ratio:48/17}.embed-responsive-48by5::before{aspect-ratio:48/5}