Hi, just got back. please do not post login details here, its public.
add this to the bottom of cb-modello/css/woo.css
or you can add this in additional css in wp-admin->modello->style->show more
also, please take a look at this:
You have an error : "woocommerce_price_slider_params is not defined"
its not theme related, its from WCML plugin- you should contact their support.