Allow page background uisng @page rule
Expects black page with white text
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>page-background.html</title>
<style>
@page {
size: 200px 100px;
margin: 10px;
background: black;
}
html {
color: white;
}
</style>
</head>
<body>
hello world
</body>
</html>