LayoutTests/fast/flexbox/flex-container-and-parent-with-align-attribute.html

<style>
.container {
  position: absolute;
}

.flex {
  display: flex;
  width: 400px;
}

.flex > div {
  background-color: green;
  width: 50px;
  height: 50px;
}
</style>
PASS if green and blue boxes are next to each other.
<div class=container align="center">
  <div class=flex>
    <div></div>
    <div style="background-color: blue"></div>
  </div>
</div>