CSS in php XML Paser for loop

I've got an RSS XML Displayer which gets elements with a for loop from an XML Rss feed as follows:

//get and output "<item>" elements
$x=$xmlDoc->getElementsByTagName('item');

//iterate though all of the feed 

for ($i=0; $i<=$x->length-1; $i++) {
    echo ("<div class='boxed'>");
  $item_title=$x->item($i)->getElementsByTagName('date')
  ->item(0)->childNodes->item(0)->nodeValue;
  $item_link=$x->item($i)->getElementsByTagName('location')
  ->item(0)->childNodes->item(0)->nodeValue;
  $item_desc=$x->item($i)->getElementsByTagName('report')
  ->item(0)->childNodes->item(0)->nodeValue;
  echo ("<p><a href='" . $item_link
  . "'>" . $item_title . "</a>");
   echo ("</div>");
  echo ("<br>");

  echo ($item_desc . "</p>");
}

?>

I'd like to modify this using css so each element is seperated in a 'box' via CSS. I'm sure this is possible but cannot figure out how to do it. The CSS intuitively needs to be implemented within the for loop. How to implement that?