JSFiddle - React, Tailwind, and code Playground

HTML

<div class="principal">
    <div class="pagina">
        <div class="sub-pagina">Página 1/2</div>    
    </div>
    <div class="pagina">
        <div class="sub-pagina">Página 2/2</div>    
    </div>
</div>

CSS

body {
        width: 100%;
        height: 100%;
        margin: 0;
        padding: 0;
        background-color: #FAFAFA;
        font: 12pt "Tahoma";
    }
    * {
        box-sizing: border-box;
        -moz-box-sizing: border-box;
    }
    .pagina {
        width: 210mm;
        min-height: 297mm;
        padding: 20mm;
        margin: 10mm auto;
        border: 1px #D3D3D3 solid;
        border-radius: 5px;
        background: white;
        border-radius: 10px;
        box-shadow: 0 0 5px rgba(0, 0, 0, 0.1);
    }
    .sub-pagina {
        padding: 1cm;
        border: 5px black solid;
        height: 257mm;
        outline: 2cm green solid;
        border-radius: 10px;
    }
    
    @page {
        size: A4;
        margin: 0;
    }
    @media print {
        html, body {
            width: 210mm;
            height: 297mm;        
        }
        .pagina {
            margin: 0;
            border: initial;
            border-radius: initial;
            width: initial;
            min-height: initial;
            box-shadow: initial;
            background: initial;
            page-break-after: always;
        }
    }

JavaScript

window.print();