viewport-page-print-ref.html

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<!doctype html>

<html

<meta charset=utf-8>

<title>test reference</title>

<link rel="author" title="Florian Rivoal" href="https://florian.rivoal.net/">

<style>

body {

    margin: 0;

:root {

    background: green;

@page {

    margin: 0;

</style>

<div></div>