body {
  font-family: Arial, sans-serif;
  background-color: #f4f4f4;
  color: #333;
  text-align: center;
  padding: 40px;
}

h1 {
  margin-bottom: 20px;
}

input {
  padding: 10px;
  font-size: 16px;
  width: 200px;
  margin-right: 10px;
  border-radius: 5px;
}

button {
  padding: 10px 15px;
  font-size: 16px;
  cursor: pointer;
}

.result {
  margin-top: 30px;
}

h2, h3 {
  margin: 10px 0;
}

.warning-red{
  color: red;
  font-weight: bold;
}