.hefe-video-player-html-parent,
.hefe-video-player-vimeo-parent,
.hefe-video-player-youtube-parent {
    position: relative;
    padding-bottom: 56.25%;
    padding-top: 25px;
    height: 0;
}

.hefe-video-player-html-parent video,
.hefe-video-player-vimeo-parent iframe,
.hefe-video-player-youtube-parent iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}