body {
  font-family: Arial, sans-serif;
  background: #f4f4f4;
  padding: 30px;
  display: flex;
  justify-content: center;
}

.container {
  background: white;
  padding: 30px;
  border-radius: 10px;
  text-align: center;
  max-width: 600px;
  width: 100%;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

input {
  padding: 10px;
  width: 80%;
  font-size: 18px;
  margin-bottom: 15px;
}

.formatted {
  font-size: 20px;
  background: #eee;
  padding: 10px;
  border-radius: 5px;
  word-break: break-word;
  margin-bottom: 10px;
}

button {
  padding: 10px 20px;
  font-size: 16px;
  cursor: pointer;
}