trouble with " nomobile" suffix

I am trying to turn off a header module (slideshow) for mobile on a new site (http://www.solutions-recovery.com/).
Just entering the module suffix does not help.

Im running Joomla 2.5.17, up to date.

Thanks for any help.

hi

Please add this code to mobile.css file:

Code: Select all

.nomobile {
display: none !important;
}