chore(demo): update style.css to @coreui/coreui v2.1.0, navLink disabled example

Author: xidedix

demo/src/_nav.js

@@ -8,6 +8,27 @@ export default {
         variant: 'info',
         text: 'NEW'
       }
-    }
+    },
+    {
+      name: 'Disabled',
+      url: '/dashboard',
+      icon: 'cui-ban icons',
+      attributes: { disabled: true },
+    },
+    {
+      name: 'Download CoreUI',
+      url: 'https://coreui.io/react/',
+      icon: 'cui-cloud-download icons',
+      class: 'mt-auto',
+      variant: 'success',
+      attributes: { target: '_blank', rel: "noopener" },
+    },
+    {
+      name: 'Try CoreUI PRO',
+      url: 'https://coreui.io/pro/react/',
+      icon: 'cui-layers icons',
+      variant: 'danger',
+      attributes: { target: '_blank', rel: "noopener" },
+    },
   ]
 };