Install steps - Message fails to be rendered when user is not connected to the Internet

Current JavaScript code fails to display a message when the user is not connect to the Internet.

Code should be updated to:
AJS.$("#no-connection-warning").removeClass("hidden");

instead of:
AJS.$("#no-connection-warning").show();

Also in the scope of this issue, we should also consider hiding the three radio options, as the first and second options don't work if an Internet connection is not available. (check attached image)