body {
  margin: 0;
  padding: 0;
  background-color: #222;
  color: #ddd;
}

header {
  width: 100vw;
  text-align: center;
  margin-top: 50px;
  margin-bottom: 10px;
}

button {
  background-color: #222;
  color: #ddd;
}

h1 {
  margin: auto;
}

main {
  text-align: center;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
}

video {
  display: none;
  width: 100%;
}

footer {
  text-align: center;
}