ml">

<style>
@page { size: 5in 3in; margin: 0.5in; }
body {
  margin: 0;
  font-size: 0.25in;
}
.flexbox {
  display: flex;
  flex-direction: column;
  border: 0.25in solid black;
}
.flexbox > div {
  border: 4px solid purple;
}
.flexbox > .nested {
  border: 4px solid gold;
}
</style>

<div>Before Flexbox</div>
<div class="flexbox">
  <div class="flexbox nested" style="break-after: page">
    <div>1</div>
    <div>2</div>
  </div>
  <div class="flexbox nested">
    <div>3</div>
    <div>4</div>
  </div>
<