.wrapper {
  position: relative;
  width: 966px;
  padding-bottom: 543px; /* 16:9 ratio */
  height: 0;
  overflow: hidden;
  margin: 0 auto 4rem;
}

.player {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

@media screen and (max-width: 966px) {
  .wrapper {
    width: 100%;
    padding-bottom: 56.25%;
    margin-bottom: 2rem;
  }
}

@media screen and (max-width: 512px) {
  .wrapper {
    margin-bottom: 1.5rem;
  }
}