body {
  margin: 0;
  padding: 0;
  text-decoration: none;
  font-family: 'Courier New', Courier, monospace;
  font-size: 12px;
}
main {
  width: 100vw;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.video-wrapper {
  width: 90%;
  max-width: 1200px;
  position: relative;
}
.video-sizer {
  width: 100%;
  height: 0;
  padding-bottom: 56.25%;
  position: relative;
}
.video-sizer > video {
  width: 100%;
  height: 100%;
  position: absolute;
  object-fit: contain;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  margin: auto;
}