Parallax effect not working

I have a Sydney themed site and am using the frontage template for a page with site builder elements. I have a couple of rows with a background image. Previously the row would have a nice parallax effect. Now the image just scrolls leaving the row gray on scroll.

Any suggestions? http://www.nieuwsteorganiseren.nl

Hello there,

Please add the css code below to the styles.css in your child theme if any, or use simple custom css plugin:

.panel-row-style {
    background-position: center center !important;
}

Let me know how it goes.

Regards,
Awan