How To Make My Navigation Bar Align Center Or Right

Curriculum Help
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1

Hi coders,
Please let me know how to make navigation bar of my landing page center?
https://codepen.io/cci_sajad/pen/rQgZJP

2

An easy way to center that navigation bar is by removing width:100%; and adding margin: auto to your #nav-bar CSS, like this:

#nav-bar{
  postion:fixed;
  top:0px;
  margin: auto;
}
3

Ok thanks! One thing more if you can please help me with.
When I click on any element of my navigation bar, navigation bar is disappeared!