flexbox-safe-overflow-position-005.html

<!DOCTYPE html>
<link rel="author" title="David Grogan" href="mailto:[email protected]">
<link rel="help" href="https://drafts.csswg.org/css-align-3/#overflow-values">
<link rel="match" href="../reference/ref-filled-green-100px-square.xht">
<meta name="assert"
  content="safe flex-start allows for overflow past the end edge, which is bottom/right in the case of wrap-reverse + vertical-lr" />

<style>
  #reference-overlapped-red {
    position: absolute;
    background-color: red;
    width: 100px;
    height: 100px;
    z-index: -1;
  }

  .flex {
    display: flex;
    flex-flow: wrap-reverse;
    writing-mode: vertical-lr;
    inline-size: 90px;
    block-size: 90px;
    align-content: safe flex-start;
    justify-content: safe flex-start;
  }

  .item {
    flex: 0 0 100px;
    width: 100px;
    height: 100px;
    background: green;
  }

</style>

<p>Test passes if there is a filled green square and <strong>no red</strong>.
</p>
<div id="reference-overlapped-red"></div>

<div class="flex">
  <div class="item"></div>
</div>

chromium/third_party/blink/web_tests/external/wpt/css/css-flexbox/flexbox-safe-overflow-position-005.html