* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: #000;
}

.app {
  width: 100vw;
  height: 100vh;
}

video {
  width: 100%;
  height: 100%;
  display: block;
  background: #000;
  object-fit: contain;
}