chromium/third_party/blink/web_tests/external/wpt/css/css-tables/absolute-tables-001.html

<!doctype html>
<script src='/resources/testharness.js'></script>
<script src='/resources/testharnessreport.js'></script>
<script src='/resources/check-layout-th.js'></script>
<link rel="author" title="Anders Ruud" href="mailto:[email protected]">
<link rel="author" title="David Grogan" href="mailto:[email protected]">
<link rel="help" href="https://www.w3.org/TR/CSS22/visudet.html#the-width-property" title="See Note in <percentage>">
<meta name="assert" content="percent lengths of an abspos table are resolved against the padding box of the parent" />
<style>
    main div {
        position: relative;
        border: 5px solid black;
        height: 60px;
        width: 60px;
        padding: 5px 7px 11px 13px;
        margin: 10px;
    }

    .tbl {
        display: table;
        background-color: skyblue;
        position: absolute;
        width: 50%;
        height: 50%;
    }

    .cell {
        display: table-cell;
        outline: 1px dashed blue;
    }

    .topleft { left: 0; top: 0; }
    .topright { right: 0; top: 0; }
    .bottomright { right: 0; bottom: 0; }
    .bottomleft { left: 0; bottom: 0; }

    .vertical  { writing-mode: vertical-lr; }

</style>
<p>Tests that percent lengths of an absolutely positioned table is resolved
against the <em>padding box</em> of the parent.
<hr>
<output id="log"></output>
<main>
<div>
  <span class="tbl topleft" data-expected-client-width=40 data-expected-client-height=38 data-offset-x=0 data-offset-y=0>
    <span class="cell" data-expected-client-width=40 data-expected-client-height=38>abc</span>
  </span>
</div>
<div>
  <span class="tbl topright" data-expected-client-width=40 data-expected-client-height=38 data-offset-x=40 data-offset-y=0>
    <span class="cell" data-expected-client-width=40 data-expected-client-height=38>abc</span>
  </span>
</div>
<div>
  <span class="tbl bottomright" data-expected-client-width=40 data-expected-client-height=38 data-offset-x=40 data-offset-y=38>
    <span class="cell" data-expected-client-width=40 data-expected-client-height=38>abc</span>
  </span>
</div>
<div>
  <span class="tbl bottomleft" data-expected-client-width=40 data-expected-client-height=38 data-offset-x=0 data-offset-y=38>
    <span class="cell" data-expected-client-width=40 data-expected-client-height=38>abc</span>
  </span>
</div>

<div class="vertical">
  <span class="tbl topleft" data-expected-client-width=40 data-expected-client-height=38 data-offset-x=0 data-offset-y=0>
    <span class="cell" data-expected-client-width=40 data-expected-client-height=38>abc</span>
  </span>
</div>
<div class="vertical">
  <span class="tbl topright" data-expected-client-width=40 data-expected-client-height=38 data-offset-x=40 data-offset-y=0>
    <span class="cell" data-expected-client-width=40 data-expected-client-height=38>abc</span>
  </span>
</div>
<div class="vertical">
  <span class="tbl bottomright" data-expected-client-width=40 data-expected-client-height=38 data-offset-x=40 data-offset-y=38>
    <span class="cell" data-expected-client-width=40 data-expected-client-height=38>abc</span>
  </span>
</div>
<div class="vertical">
  <span class="tbl bottomleft" data-expected-client-width=40 data-expected-client-height=38 data-offset-x=0 data-offset-y=38>
    <span class="cell" data-expected-client-width=40 data-expected-client-height=38>abc</span>
  </span>
</div>
</main>
<script>
    checkLayout(".tbl");
</script>