@media print {
    body {
        margin: 0;
        padding: 0;
        font-size: 14px;
    }

    #printableArea {
        width: 100%;
        height: 100%;
        page-break-inside: avoid;
        transform: scale(0.6); /* diminui o conteúdo para caber */
        transform-origin: top left;
    }

    @page {
        size: A4 portrait; /* ou 'landscape' */
        margin: 10mm;
    }
}