.embed-responsive-16by7::before{aspect-ratio:16/7}.embed-responsive-16by8::before{aspect-ratio:16/8}.embed-responsive-16by9::before{aspect-ratio:16/9}.embed-responsive-2by1::before{aspect-ratio:2/1}.embed-responsive-24by11::before{aspect-ratio:24/11}.embed-responsive-24by13::before{aspect-ratio:24/13}.embed-responsive-24by17::before{aspect-ratio:24/17}.embed-responsive-3by2::before{aspect-ratio:3/2}.embed-responsive-48by29::before{aspect-ratio:48/29}