<!DOCTYPE html>

<div>This test checks that grid item's margins do not collapse with its content's margins (single margin in the first row and double between subsequent).</div>

<div style="float: left">
  <div><p margin="20px 0px">XXXXX</p></div>
  <div style="float: left; margin:20px 0px;">XXXXX</div>
  <div><p style="float: left;" margin="20px 0px">XXXXX</p></div>
</div>