#preview-box {
    position: fixed;
    width: 360px;
    height: 220px;
    background: white;
    border: 1px solid #ccc;
    display: none;
    z-index: 1000;
    box-shadow: 0 6px 16px rgba(0,0,0,0.2);
    pointer-events: none;
    transition: top 0.05s ease, left 0.05s ease;
}

#preview-frame {
    width: 200%;
    height: 200%;
    border: none;
    transform: scale(0.5);
    transform-origin: top left;
}