Sitebuilder is withe after modify a page

I was changing my home page with page builder from the management panel of wordpress pages. I added a new header contenent with the following html code:

<script type="text/javascript" src="https://cdn1.matrimonio.com/js/wp-widget.js"></script>
<div id="wp-widget-reviews">
	<div id="wp-widget-preview">
		Leggi <a href="https://www.matrimonio.com/fotografo-matrimonio/gm-photography--e149790/opinioni">le nostre raccomandazioni</a> a   <a href='https://www.matrimonio.com'><img src='https://cdn1.matrimonio.com/img/logo_widget_it_IT.gif'></a>
	</div>
</div>
<script>wpShowReviews('149790');</script>

The page you see correctly, but if I want to edit out all white

the site is: www.gennaromazzacane.it