JSFiddle - React, Tailwind, and code Playground

HTML

<body>
  <div style="height: 215mm; width: 139mm; border:solid grey 1px;">
    <!-- My content -->
    ...
  </div>
</body>

CSS

@page {
  size: 139mm 215mm;
  height: 215mm;
  width: 139mm;
  margin: 0;
}

@media print {
  @page {
  size: 139mm 215mm;
  height: 215mm;
  width: 139mm;
  }
}

html {
  width: 139mm;
  height: 215mm;
  margin: 0;
}

body {
  width: 139mm;
  height: 215mm;
  margin: 0;
}

JavaScript

window.print();