.stt-banner-wrapper {
    text-align: center;
    margin: 20px auto;
}

.stt-banner-3d img {
    width: 100%;
    max-width: 600px;
    border-radius: 12px;
    box-shadow: 0 10px 20px rgba(0,0,0,0.25);
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
}

.stt-buttons {
    margin-top: 15px;
}

.stt-btn {
    display: inline-block;
    margin: 0 10px;
    padding: 12px 24px;
    background: linear-gradient(to right, #3b82f6, #06b6d4);
    color: white;
    font-weight: bold;
    text-decoration: none;
    border-radius: 25px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
    transition: transform 0.2s, box-shadow 0.2s;
}

.stt-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.4);
}