<!DOCTYPE html>
<!-- Simulate two multi-column containers with an out-of-flow positioned child that
     fragments, even in the presence of break-inside: avoid and break-before: column. -->
<style>
.initial {
  float: left;
  height: 20px;
  width: 20px;
  background: blue;
}
.first-fragment {
  width: 40px;
  height: 20px;
  background: green;
  margin-top: 10px;
}
.second-fragment {
  width: 40px;
  height: 10px;
  background: green;
  margin-left: 50px;
}
</style>
<div class="initial"></div>
<div class="second-fragment"></div>
<div class="first-fragment"></div>
<div class="initial"></div>
<div class="second-fragment"></div>
<div class="first-fragment"></div>
