.embed-responsive-1by1{aspect-ratio:1/1}.embed-responsive-1by1::before{padding-top:100.00%}.embed-responsive-3by1{aspect-ratio:3/1}.embed-responsive-3by1::before{padding-top:33.33%}.embed-responsive-3by4{aspect-ratio:3/4}.embed-responsive-3by4::before{padding-top:133.33%}.embed-responsive-43by48{aspect-ratio:43/48}.embed-responsive-43by48::before{padding-top:111.63%}.embed-responsive-48by29{aspect-ratio:48/29}.embed-responsive-48by29::before{padding-top:60.42%}