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<!DOCTYPE html>
<!--
     Any copyright is dedicated to the Public Domain.
     http://creativecommons.org/publicdomain/zero/1.0/
-->
<!--
     This test verifies that we include our children's overflow areas in the
     flex container's overflow area -- invalidating their old location and new
     location when the flex container is moved, even if they stick outside the
     flex container.
-->
<html class="reftest-wait">
  <head>
    <script>
      function tweak() {
        var outer = document.getElementById("outer");
        outer.style.marginLeft = "40px";

        document.documentElement.removeAttribute("class");
      }

      window.addEventListener("MozReftestInvalidate", tweak, false);
    </script>
    <style>
      div#flexContainer {
        width: 100px;
        height: 50px;
        background: lightgray;
        display: flex;
        justify-content: center;
      }

      div#flexItem {
        border: 1px solid black;
        height: 200%;
        background: purple;
      }
    </style>
  </head>
  <body>
    <div id="outer">
      <div id="flexContainer">
        <div id="flexItem">item</div>
      </div>
    </div>
  </body>
</html>