.embed-responsive-1by1{aspect-ratio:1/1}.embed-responsive-1by1::before{padding-top:100.00%}.embed-responsive-16by13{aspect-ratio:16/13}.embed-responsive-16by13::before{padding-top:81.25%}.embed-responsive-16by9{aspect-ratio:16/9}.embed-responsive-16by9::before{padding-top:56.25%}.embed-responsive-48by19{aspect-ratio:48/19}.embed-responsive-48by19::before{padding-top:39.58%}