body {
  background: #121212;
  color: white;
  font-family: 'Segoe UI', sans-serif;
  text-align: center;
  padding: 20px;
}
canvas {
  background: #2a2a2a;
  display: block;
  margin: 20px auto;
  border-radius: 10px;
}
button {
  background: #00bfff;
  border: none;
  color: white;
  padding: 10px 20px;
  font-weight: bold;
  margin: 10px;
  cursor: pointer;
  border-radius: 10px;
}
input[type="text"] {
  padding: 8px;
  border-radius: 6px;
  border: none;
  margin-right: 5px;
}
form {
  margin-top: 15px;
}