After you sync content to the cloud, you can use the View in Cloud option to view the content in the cloud site. This can be especially useful if you locked the content on your Enterprise on-premise site.
Hover over a synced file/folder in the library and click More then View in Cloud.
Tip: Files and folders synced to the cloud display the synced icon. Contents of a folder that have been synced display the indirectly synced icon.
You can also view synced content on the cloud by clicking on the location trail after clicking to display the Sync Info box.
The synced cloud site will open, displaying your content.
Note: If you aren't logged into the cloud you'll need to enter your email and password.