parallax scrolling

Hi, I would like to keep parallax scrolling on a new site Rose-Florist.co.uk but it is not working due to the following CSS code needed to display the slider on mobiles. Is there a revised CSS code I can use instead which will continue to allow the correct display on mobiles whilst keeping the parallax scrolling operational? #fullpage .section, #feature-slider-section .hentry { background-attachment:scroll !important; } Thanks, Chris