body {
    background-color: #45a049;
    font-family: Arial, sans-serif;
    max-width: 600px;
    margin: 0 auto;
    padding: 20px;
}
.container {
    background-color: #ffffff;
    border-radius: 10px;
    max-width: 400px;
    padding: 20px;
    margin-top: 20px;
}
h1 {
    color: #000000;
    text-align: center;
}
input, button {
    padding: 8px;
    margin: 5px 0;
    border-radius: 10px;
}
button {
    background-color: #4CAF50;
    color: white;
    border: none;
    cursor: pointer;
    margin-left: 150px;
}
button:hover {
    background-color: #45a049;
}
#resultado {
    margin-top: 15px;
    font-weight: bold;
}