* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  background-color: #f1f1f1;
  font-family: Arial, sans-serif;
}

.container {
  text-align: center;
  background-color: #fff;
  padding: 30px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  width: 90%;
  max-width: 400px;
}

.heading {
  font-size: 26px;
  margin-bottom: 20px;
  color: #333;
}

.form-group {
  margin-bottom: 20px;
}

.form-control {
  width: 100%;
  padding: 12px;
  font-size: 16px;
  border: 1px solid #ccc;
  border-radius: 6px;
  margin-bottom: 10px;
}

.btn {
  padding: 10px 20px;
  background-color: #007bff;
  color: #fff;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 16px;
}

.btn:hover {
  background-color: #0056b3;
}

.result {
  font-size: 18px;
  color: #222;
  margin-top: 15px;
}