.youtubeBlockResponsive16by9,.youtubeBlockResponsive4by3 {
    position: relative;
    height: 0;
}
.youtubeBlockResponsive16by9 iframe, .youtubeBlockResponsive4by3 iframe{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.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%;
}

/*================================================
*  video replace-img
================================================*/
.youtube_play:hover {cursor:pointer;}
.youtube_play .youtube_btn {
width:42px;
height:30px;
background-image:url(yt-icon_dark.png);
position:absolute;
top:0;
bottom:0;
left:0;
right:0;
margin:auto;
}
.youtube_play:hover .youtube_btn {
  background-image:url(yt-icon_red.png);
}
.unstarted-mode .ytp-title-beacon {
  display: none;
}