.RWDvideo006 {
  width: 100%;
}
.RWDvideo006__wrapper {
  width: 100%;
  overflow: hidden;
  position: relative;
}
.RWDvideo006__pic {
  position: absolute;
  width: 100%;
  height: 100%;
  left: 0;
  top: 0;
  z-index: 10;
  background-color: #eee;
}
.RWDvideo006__pic__img {
  -o-object-fit: cover;
     object-fit: cover;
  width: 100%;
  height: 100%;
  display: block;
}
.RWDvideo006__video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 20;
  pointer-events: none;
  -webkit-user-select: none;
     -moz-user-select: none;
      -ms-user-select: none;
          user-select: none;
}
.RWDvideo006__video iframe {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 100vw;
  height: 100vh;
  -webkit-transform: translate(-50%, -50%);
          transform: translate(-50%, -50%);
}
@media (min-aspect-ratio: 16/9) {
  .RWDvideo006__video iframe {
    width: 110vw;
    height: 80vw;
  }
}

@media (max-aspect-ratio: 16/9) {
  .RWDvideo006__video iframe {
    width: 300svh;       /* 16/9 * 100 */
    height: 200svh;
  }
}