Wix and Widgets -transparent background

Hi all and especially to the magic person who might be able to help me.

I'm using WIX for my web page and adding widgets. Wix does not have the functionality to open or expand the page for a widget so the space has to be provided on the page for the full widget. When using the Availability search this leave a large blank space on the page until the guests chooses to search for availability.

Right now I can over lay the widget bringing it to the front so it opens on top of other features. The widgets all seem to have a transparent back ground.

Does anyone know if there is a way to select for the widgets to have a white background rather than transparent. Is this a feature I would need to request? It seems to be my best option for a seamless integration on WIX. IF anyone is a coder and would like to charge me to customize the code I'd be happy to pay!!

Any suggestions welcome.

Thanks
Autumn
Park City Adventure Lodging

Thanks so much for you help, I tried that and got mixed results.

Here is my code

<!-- Test Availability -->
<!-- OwnerRez Availability/Property Search widget -->
<div class="ownerrez-widget" data-widget-type="Test Availability - Availability/Property Search" data-widgetId="2f27ff2d04604f47aa49975bafdf5574 "style="background-color:#fff"></div>
<script src="https://secure.ownerreservations.com/widget.js"></script>

Now on my page preview the widget shows the narrow box with the dates to select Availability but the calendar drop down is cut in half and the result fill into that same small box rather than filling the space designated for the widget? Not sure you understand my explanation and not sure if there is a way to attach a screen shot.