.embed-responsive-1by1{aspect-ratio:1/1}.embed-responsive-1by1::before{padding-top:100.00%}.embed-responsive-20by24{aspect-ratio:20/24}.embed-responsive-20by24::before{padding-top:120.00%}.embed-responsive-4by3{aspect-ratio:4/3}.embed-responsive-4by3::before{padding-top:75.00%}.embed-responsive-48by25{aspect-ratio:48/25}.embed-responsive-48by25::before{padding-top:52.08%}.embed-responsive-8by3{aspect-ratio:8/3}.embed-responsive-8by3::before{padding-top:37.50%}