body {
  font-family: sans-serif;
  text-align: center;
  padding-top: 50px;
  background-color: #f5f5f5;
}
.container {
  background: white;
  padding: 40px;
  max-width: 400px;
  margin: auto;
  border-radius: 8px;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
}
button {
  padding: 12px 25px;
  font-size: 16px;
  background-color: #6772e5;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}