.snow {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.flake {
    position: absolute;
    bottom: 100%;
    width: 10px;
    height: 10px;
    background: #fff;
    border-radius: 50%;
    animation: fall 1s linear infinite;
}

@keyframes fall {
    to {
        transform: translateY(100vh);
        opacity: 0;
    }
}

.flake:nth-child(1) { left: 10%; animation-duration: 0.6s; animation-delay: 0s; }
.flake:nth-child(2) { left: 20%; animation-duration: 1.0s; animation-delay: 0.1s; }
.flake:nth-child(3) { left: 30%; animation-duration: 0.8s; animation-delay: 0.2s; }
.flake:nth-child(4) { left: 40%; animation-duration: 1.2s; animation-delay: 0.3s; }
.flake:nth-child(5) { left: 50%; animation-duration: 0.7s; animation-delay: 0.4s; }
.flake:nth-child(6) { left: 60%; animation-duration: 1.3s; animation-delay: 0.5s; }
.flake:nth-child(7) { left: 70%; animation-duration: 0.9s; animation-delay: 0.6s; }
.flake:nth-child(8) { left: 80%; animation-duration: 1.1s; animation-delay: 0.7s; }
.flake:nth-child(9) { left: 90%; animation-duration: 0.5s; animation-delay: 0.8s; }

#banner-container {
    bottom: 10px;
    display: flex;
    justify-content: center;
    width: 100%;
}

#banner {
    width: 300px;
    height: 50px;
    background-color: #f1f1f1;
    border: 2px solid #ccc;
    text-align: center;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    overflow: hidden;
    position: relative;
}

#banner::before {
    content: 'Anúncio';
    position: absolute;
    top: 5px;
    right: 10px;
    font-size: 12px;
    color: #555;
    background: white;
    padding: 2px 4px;
    border-radius: 4px;
    border: 1px solid #ccc;
}

#banner iframe {
    width: 100%;
    height: 100%;
    border: none;
}