<!doctype html>
<meta charset="utf-8">
<title>CSS Test Reference</title>
<style>
  .no-bottom-margin {
    margin-bottom: 0;
  }
  .clamp {
    display: flow-root;
    font: 16px / 32px serif;
    white-space: pre;
    background-color: yellow;
  }
</style>

<p class="no-bottom-margin"><span>The following yellow box should clamp after 4 lines.</span></p>

<div class="clamp">Line 1
Line 2
Line 3
Line 4â€¦</div>
