.cmtve-embed { margin: 0 auto 1rem; }
.cmtve-embed-16by9 { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; }
.cmtve-embed-16by9 iframe { position: absolute; top:0; left:0; width:100%; height:100%; }
.cmtve-placeholder { padding:12px; border:1px dashed #ccc; border-radius:8px; font-size:13px; }