.embed-responsive-16by11{aspect-ratio:16/11}.embed-responsive-16by11::before{padding-top:68.75%}.embed-responsive-3by2{aspect-ratio:3/2}.embed-responsive-3by2::before{padding-top:66.67%}.embed-responsive-47by48{aspect-ratio:47/48}.embed-responsive-47by48::before{padding-top:102.13%}.embed-responsive-48by23{aspect-ratio:48/23}.embed-responsive-48by23::before{padding-top:47.92%}