.container {
  width: 500px;
  margin: 0 auto;
  padding: 20px;
  background-color: #f2f2f2;
  border: 1px solid #ccc;
}

h1 {
  text-align: center;
}

label, input, p {
  margin-bottom: 10px;
}

input[type="text"] {
  width: 100%;
  padding: 5px;
}

input[type="submit"] {
  width: 100%;
  padding: 10px;
  background-color: #4CAF50;
  color: white;
  border: none;
  cursor: pointer;
}