946167-1.html - mozsearch

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<!DOCTYPE html>

<html>

<body>

<script>

  // Create a bunch of nested flex containers:

  var parentNode = document.body;

  var depth = 50;

  for (var i = 0; i < depth; i++) {

    var childNode = document.createElement("div");

    childNode.style.display = "flex";

    parentNode.appendChild(childNode);

    parentNode = childNode;

  // Add some text in the innermost child:

  childNode.innerHTML = "Text";

  // Force reflow:

  var height = document.body.children[0].offsetHeight;

</script>