.embed-responsive-1by1{aspect-ratio:1/1}.embed-responsive-1by1::before{padding-top:100.00%}.embed-responsive-37by48{aspect-ratio:37/48}.embed-responsive-37by48::before{padding-top:129.73%}.embed-responsive-4by3{aspect-ratio:4/3}.embed-responsive-4by3::before{padding-top:75.00%}.embed-responsive-48by41{aspect-ratio:48/41}.embed-responsive-48by41::before{padding-top:85.42%}