Firefox doesn't allow cross-domain fonts

If you will open the Modern Admin Template directly i.e(file:///C:/Users/abc/modern-admin) in Firefox without local host or link url, you will find brocken font-icons. It is due to Firefox doesn't allow cross-domain fonts.

Open the Modern Admin Template html files from the localhost i.e (http://localhost/modern-admin/) or link url (http://example.com/modern-admin/), it will work fine.

To resolve open directly i.e(file:///C:/Users/abc/modern-admin) in Firefox issue, you need to move app-assets/fonts/ folder to html/text-direction/template-name/fonts (i.e html/ltr/vertical-menu-template/fonts), make sure you will change the fonts include path in css & html files.

Another solution is to use Base64 Encoding Web & Icon Fonts in CSS