body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    animation: backgroundAnimation 10s infinite alternate;
}

.container {
    text-align: center;
    padding: 20px;
    background-color: rgba(255, 255, 255, 0.8); /* Fundo branco translúcido */
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

h1 {
    color: #333;
    margin-bottom: 20px;
}

h2 {
    color: #555;
    margin-top: 20px;
}

ul {
    list-style-type: none;
    padding: 0;
}

ul li {
    margin: 10px 0;
}

footer {
    margin-top: 20px;
    color: #777;
    font-size: 0.9em;
}

@keyframes backgroundAnimation {
    0% { background-color: #ff9999; } /* Cor inicial */
    25% { background-color: #ffcc99; }
    50% { background-color: #ffff99; }
    75% { background-color: #99ff99; }
    100% { background-color: #99ccff; } /* Cor final */
}