gecko-dev/layout/reftests/meta-viewport/scrollbars-in-half-height-c...

<!DOCTYPE html>
<meta name="viewport" content="width=device-width,initial-scale=2">
<style>
html, body {
  margin: 0;
  width: 100%;
  height: 100%;
}
div {
  background: green;
  position: absolute;
  width: 100%;
  height: 50%;
}
</style>
<div></div>