.video-wrapper {
  position: relative;
  padding-bottom: 56.25%; /* 16:9 */
  height: 0;
  margin-bottom:30px;
}
.video-wrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius:10px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.3);
}

.video-title{ font-size:32px; font-weight:500; color:#333; margin-bottom:20px; }
.video-date{ font-size:16px; color:#888; margin-bottom:20px; }
.video-description{ font-size:14px; color:#333; line-height:1.5em; }