.video-tk {
  position: fixed;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  z-index: 9999999999999999999;
  background-color: rgba(0, 0, 0, 0.8);
  display: none;
}
.video-tk .vd {
  position: absolute;
  width: 900px;
  height: 450px;
  top: 50%;
  left: 50%;
  margin-top: -225px;
  margin-left: -450px;
  box-shadow: 0 0 10px #666;
}
.video-tk .vd #vd_box {
  width: 960px;
  border-radius: 5px;
  overflow: hidden;
  height: auto;
}
@media (max-width: 767px) {
  .video-tk .vd {
    width: 100%;
    height: 3rem;
    left: 0;
    margin-top: -1.5rem;
    margin-left: 0;
  }
  .video-tk .vd #vd_box {
    width: 100%;
    height: 100%;
  }
}
.video-tk a {
  position: absolute;
  width: 24px;
  height: 24px;
  border-radius: 20px;
  top: -20px;
  right: -23px;
  border: 2px solid #999;
  z-index: 2;
}
@media (max-width: 1000px) {
  .video-tk a {
    position: fixed;
    top: .1rem;
    right: .1rem;
  }
}
.video-tk a img {
  display: block;
  width: 14px;
  margin: 5px auto;
}