.embed-responsive-1by1{aspect-ratio:1/1}.embed-responsive-1by1::before{padding-top:100.00%}.embed-responsive-23by24{aspect-ratio:23/24}.embed-responsive-23by24::before{padding-top:104.35%}.embed-responsive-3by4{aspect-ratio:3/4}.embed-responsive-3by4::before{padding-top:133.33%}.embed-responsive-48by17{aspect-ratio:48/17}.embed-responsive-48by17::before{padding-top:35.42%}