.embed-responsive-1by1{aspect-ratio:1/1}.embed-responsive-1by1::before{padding-top:100.00%}.embed-responsive-24by17{aspect-ratio:24/17}.embed-responsive-24by17::before{padding-top:70.83%}.embed-responsive-4by3{aspect-ratio:4/3}.embed-responsive-4by3::before{padding-top:75.00%}.embed-responsive-48by29{aspect-ratio:48/29}.embed-responsive-48by29::before{padding-top:60.42%}