body {
  font-family: Arial, sans-serif;
  background: #f4f4f4;
  margin: 0;
  padding: 0;
}

.converter-container {
  max-width: 500px;
  margin: 60px auto;
  background: #fff;
  padding: 30px;
  border-radius: 20px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.1);
  text-align: center;
}

.converter {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  margin-top: 20px;
}

input, select {
  padding: 10px;
  font-size: 16px;
  width: 100px;
}

button {
  padding: 10px;
  font-size: 18px;
  background: #4a90e2;
  color: white;
  border: none;
  cursor: pointer;
  border-radius: 8px;
}

.result {
  margin-top: 25px;
  font-size: 18px;
  color: #333;
}