.box {
  width: 70%;
  height: 70%;
  margin: 0 auto;
}
.movie_area {
  border: 1px solid #ccc;
}
.movie_area-inner {
  width:100%;
  position:relative;
  padding-bottom:56.25%;
  clip-path: inset(2px 2px 2px 2px);
}
@media screen and (max-width: 767px) {
  .box {
    width: auto;
    height: auto;
    margin: 0 auto;
  }
}