viewport-zero-values.html | Explore in Territory

<html>
  <head>
    <meta name='viewport' content='width=0, height=0, initial-scale=0.0, minimum-scale=0.0, maximum-scale=0.0' />
  </head>
  <body>
    A page with the viewport attribute values set to 0.
  </body>
</html>

chromium/third_party/blink/renderer/core/testing/data/viewport-zero-values.html