body {
  background-color: #000000;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  margin: 0;
  gap: 20px;
}

iframe {
  border: none;
}

.btn {
  display: inline-block;
  padding: 10px 20px;
  background-color: #888888;
  color: #ffffff;
  text-decoration: none;
  border-radius: 8px;
  font-family: sans-serif;
}