html {
    background: #f3f3f3;
}

body {
    box-sizing: border-box;
    width: 210mm;
    min-height: 297mm;
    margin: 24px auto;
    padding: 20mm 15mm 20mm 20mm;
    background: #fff;
    box-shadow: 0 2px 12px rgb(0 0 0 / 16%);
}

@media print {
    html {
        background: transparent;
    }

    body {
        width: auto;
        min-height: 0;
        margin: 0;
        padding: 0;
        box-shadow: none;
    }
}

@media (max-width: 767px) {
    body {
        width: auto;
        min-height: 0;
        margin: 0;
        padding: 24px 16px;
        box-shadow: none;
    }
}