单词的HTML分页符 - page-break-before：始终不起作用

I made a HTML for a word document and created it via file_put_contents('document.doc', $html_source);

The problem is that the style used as following:

style='page-break-before:always'

Doesn't do anything.

Any ideas or solutions?

Here is an example of what I am trying to do: http://bytes.com/topic/html-css/answers/720863-page-break-html-word-email

Microsoft Word will only recognize this style as long as it's applied to a <br /> element.

.pagebreak {
        page-break-before: always;
    }

<br class="pagebreak" />

This worked for me:

<div class=”WordSection1”></div>

I am was creating a word document from an HTML table.