How to remove or hide Blogger Navbar easily

all of blogger blogs have a horizontal navigation bar on the top part
in all blog pages.a lot of people
want to know how to remove it.
we’ll tell you how to remove or hide the navbar from your blog


1- go to >>Dashboard >> layout >> edit html
2- backup and Download Full Template .
3- check Expand Widget Templates
4- ctrl F and search for
  <b:skin><![CDATA 
5- copy and past the next code
 #navbar-iframe {
height:0px;
visibility:hidden;
display:none   }
after the searching code <b:skin><![CDATA 
 enjoy ;)