@charset "utf-8";
.modal-box .youtube-box {
  width: 100%;
  padding-bottom: 56.25%;
  position: relative;
  margin: 0;
  line-height: 0;
}
.modal-box .youtube-box iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}
.youtube-box-poster {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  cursor: pointer;
  margin: 0;
}
.youtube-box-poster img {
  width: 100%;
  height: 100%;
}