responsive full screen video on desktop and mobile (styles.sass)

styles.sass

section {
  height: 100vh;
}

.video-container {
  position: relative;
  // padding-bottom: 56.25%; <-- Important. Remove this.
  height: 0;
  overflow: hidden;

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