.responsive-video-container {
    margin: 2em;
    align: center;
    /*position: relative;*/
    /*margin-bottom: 1em;*/
    /*padding-bottom: 5%;*/
    /*height: 0;*/
    /*overflow: hidden;*/
    /*max-width: 30%;*/
}
.responsive-video-container iframe{
    /*position: absolute;*/
    /*top: 0;*/
    /*left: 0;*/
    /*width: 100%;*/
    /*height: 100%;*/
}