Content in website does not show under the right website name I have created the contents, 

And I want the content should be display like www.kvamsdanl.no.

But It was displaying like www.kvamsdanl.no/node/3(or with one of these numbers 1 , 2 or 5).

How do I achieve this thing ?

Please anyone help me to sort out this issue?
Looks like you have removed the default front page settings. Please head over to /admin/config/system/site-information and add node/3 as default front page. Let me know how you go.