#btnExportarPDF {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: #0073aa;
    color: #fff;
    border: none;
    padding: 12px 18px;
    font-size: 16px;
    border-radius: 6px;
    cursor: pointer;
    z-index: 9999;
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}