:root {
  color-scheme: dark;
  background: #000;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  background: #000;
}

.video-page {
  width: 100%;
  height: 100vh;
  height: 100dvh;
}

.video-page iframe {
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
}