.embed-container { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; width: 100%; max-width: 100%; } .embed-container iframe, .embed-container object, .embed-container embed { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }@media only screen and (max-width:999px) {.embed-container { position: relative; padding-bottom: 110%;}}