File: overscroll-fixed-transform.html

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<!DOCTYPE html>
<html
      reftest-async-scroll
      reftest-displayport-x="0" reftest-displayport-y="0"
      reftest-displayport-w="800" reftest-displayport-h="2000"
      reftest-async-scroll-x="0" reftest-async-scroll-y="-200">
<head>
  <style>
    html {
      scrollbar-width: none;
    }
    body {
      height: 3000px;
      margin: 0;
    }
    div.container {
      overflow: scroll;
      width: 100%;
      height: 100%;
      transform: translate(0px);
      scrollbar-width: none;
    }
    div.fixed {
      position: fixed;
      top: 0px;
      width: 200px;
      height: 200px;
      background: green;
    }
  </style>
</head>
<body >
  <!-- Test that an overscroll past one end of a transformed container is
       rendered as having the content create a gutter, and that
       the overscroll is reduced by some factor such that
       a 100px scroll must produce a rendered translation of less than
       100px.

       Current overscroll physics mean that an instantaneous overscroll
       by 200px produces an 8px gutter. This is governed by the logic in
       Axis::ApplyResistance(); if that logic is changed, this test will
       need to be modified to account for the new result.
  -->
  <div class="container">
    <div class="fixed">
    </div>
  </div>
</body>
</html>