.embed-responsive-1by1{aspect-ratio:1/1}.embed-responsive-1by1::before{padding-top:100.00%}.embed-responsive-15by16{aspect-ratio:15/16}.embed-responsive-15by16::before{padding-top:106.67%}.embed-responsive-2by1{aspect-ratio:2/1}.embed-responsive-2by1::before{padding-top:50.00%}.embed-responsive-3by2{aspect-ratio:3/2}.embed-responsive-3by2::before{padding-top:66.67%}