body {
    font-family: Arial, sans-serif;
    background-color: #f0f0f0;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}

header {
    background-color: #453077;
    color: white;
    padding: 10px;
    width: 100%;
    text-align: center;
}

main {
    background-color: white;
    padding: 40px;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

footer {
    margin-top: 20px;
    text-align: center;
}

.question {
    margin-bottom: 20px;
}

button {
    padding: 10px 20px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

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

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