body {
  font-family: Arial, sans-serif;
  background: #f0f4f8;
  margin: 0;
  padding: 0;
}

.container {
  max-width: 500px;
  margin: auto;
  padding: 20px;
  background: white;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
  margin-top: 40px;
  border-radius: 8px;
}

h1 {
  text-align: center;
  color: #2e7d32;
}

form {
  display: flex;
  flex-direction: column;
}

label {
  margin-top: 10px;
  font-weight: bold;
}

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

button {
  background-color: #2e7d32;
  color: white;
  border: none;
  cursor: pointer;
  margin-top: 20px;
}

button:hover {
  background-color: #1b5e20;
}

#result {
  margin-top: 20px;
  font-size: 1.2em;
  text-align: center;
}

footer {
  text-align: center;
  margin-top: 40px;
  padding: 10px;
  color: #666;
  font-size: 0.9em;
}