.youtubeBlockResponsive16by9,.youtubeBlockResponsive4by3 {
    position: relative;
    height: 0;
}
.youtubeBlockResponsive16by9 iframe, .youtubeBlockResponsive4by3 iframe{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

.youtubeBlockResponsive16by9 {
    padding-bottom: 56.25%
}

.youtubeBlockResponsive4by3{
    padding-bottom: 75%;
}

.ccm-edit-mode-disabled-item.youtubeBlockResponsive16by9  {
    padding-top: 28.125%;
    padding-bottom:  28.125%
}

.ccm-edit-mode-disabled-item.youtubeBlockResponsive4by3  {
    padding-top: 37.5%;
    padding-bottom: 37.5%
}