Please check back to your site now after removing the browser cache, I have turned OFF the theme Minify CSS from XStore >> Theme Settings >> Speed Optimization & then turned ON the Mobile Cache and Mobile Separate Cache from WP Rocket as shown below and now it is working fine on your site.
Please watch this video I have captured for you: https://www.veed.io/view/9ad52849-3f69-4b6e-922d-1187d126ed87?sharingWidget=true
Regards 8Themes Team.
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