.embed-responsive-1by1{aspect-ratio:1/1}.embed-responsive-1by1::before{padding-top:100.00%}.embed-responsive-16by15{aspect-ratio:16/15}.embed-responsive-16by15::before{padding-top:93.75%}.embed-responsive-24by23{aspect-ratio:24/23}.embed-responsive-24by23::before{padding-top:95.83%}.embed-responsive-3by1{aspect-ratio:3/1}.embed-responsive-3by1::before{padding-top:33.33%}.embed-responsive-3by2{aspect-ratio:3/2}.embed-responsive-3by2::before{padding-top:66.67%}