body {
  font-family: Arial, sans-serif;
  background: #f5f5f5;
  text-align: center;
  padding: 2rem;
}
video {
  width: 60%;
  border: 2px solid #333;
  border-radius: 10px;
  margin-bottom: 1rem;
}
#chat {
  margin-top: 1rem;
}
#messages {
  background: #fff;
  border: 1px solid #ccc;
  height: 200px;
  width: 60%;
  margin: 0 auto;
  overflow-y: auto;
  padding: 1rem;
  text-align: left;
}
input {
  width: 60%;
  padding: 0.5rem;
  margin-top: 1rem;
}
button {
  padding: 0.5rem 1rem;
  margin: 1rem;
}