body {
  font-family: Arial, sans-serif;
  background-color: #f4f4f9;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
}

.container {
  text-align: center;
  background: white;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

h1 {
  color: #333;
}

.converter {
  margin-top: 20px;
}

input, select {
  padding: 10px;
  margin: 10px 5px;
  border-radius: 4px;
  border: 1px solid #ddd;
}

button {
  padding: 10px 20px;
  background-color: #4CAF50;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}

button:hover {
  background-color: #45a049;
}

#result {
  margin-top: 20px;
  font-size: 1.2em;
  font-weight: bold;
}