body {
  font-family: Arial, sans-serif;
  text-align: center;
  margin: 20px;
}
input {
  padding: 8px;
  width: 250px;
  margin: 10px;
}
.buttons button {
  padding: 10px 15px;
  margin: 5px;
  cursor: pointer;
}
video {
  width: 80%;
  max-width: 800px;
  border: 2px solid #333;
  margin: 10px auto;
  display: block;
}