.embed-responsive-16by11{aspect-ratio:16/11}.embed-responsive-16by11::before{padding-top:68.75%}.embed-responsive-24by17{aspect-ratio:24/17}.embed-responsive-24by17::before{padding-top:70.83%}.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%}