.embed-responsive-24by19{aspect-ratio:24/19}.embed-responsive-24by19::before{padding-top:79.17%}.embed-responsive-3by4{aspect-ratio:3/4}.embed-responsive-3by4::before{padding-top:133.33%}.embed-responsive-48by35{aspect-ratio:48/35}.embed-responsive-48by35::before{padding-top:72.92%}.embed-responsive-48by37{aspect-ratio:48/37}.embed-responsive-48by37::before{padding-top:77.08%}