body {
  font-family: Arial, sans-serif;
  background-color: #f4f4f4;
  margin: 0;
  padding: 20px;
}

.container {
  background-color: #fff;
  border-radius: 8px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
  text-align: center;
  max-width: 400px;
  margin: auto;
}

form {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 20px;
}

label {
  margin: 10px 0;
}

input {
  width: 100%;
  padding: 8px;
  margin-bottom: 10px;
  box-sizing: border-box;
}

button {
  background-color: #4caf50;
  color: #fff;
  border: none;
  padding: 10px 20px;
  font-size: 16px;
  cursor: pointer;
}

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

#resultado {
  margin-top: 20px;
  font-weight: bold;
  font-size: 18px;
}