title: BootStrap: page refresh on below navbar
body: <p>I have a navbar that is horizontal built using bootstrap. When I select a menu option, I want only the part below the navbar to refresh. So, say I select Menu 1, I want only the part below the bar to refresh</p>
  
  <p>Questions
  1. How can I achieve that?<br>
  2. If I design a completely new page and have the navbar there, will it have same effect. </p>
  
  <p><a href="https://i.stack.imgur.com/378b0.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/378b0.png" alt="enter image description here"></a></p>