body {
  font-family: Arial, sans-serif;
  background-color: #f5f5f5;
  margin: 0;
  padding: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

h1 {
  color: #333;
}

.converter {
  background: #fff;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
  max-width: 400px;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.converter input,
.converter select {
  padding: 8px;
  font-size: 1rem;
  border: 1px solid #ccc;
  border-radius: 4px;
}

.result {
  margin-top: 10px;
  font-weight: bold;
  font-size: 1.2rem;
  color: #006400;
}