How To Remove Blogger Navabar

To hide the Blogger Navbar :
1- Log in to blogger

2- On your Dashboard, select Layout. This will take you to the Template tab. Click Edit HTML. Under the Edit Template section you will see you blog's HTML.

3- paste the CSS definition in the top of the template code:

...<b:skin><![CDATA[/*-----------------------------------------------
Blogger Template Style
Name:     Tricksum
Designer: Nidhun break
URL:     http://tricksum.blogspot.com/
Date:     17 nov 2011

Updated by: Tricksum.blogspot.com-----------------------------------------------
*/#navbar-iframe { display: none !important;}

/* Variable definitions  ====================  
<Variable name="mainBgColor" description="Main Background Color"            
type="color" default="#fff" value="#ffffff">  
<Variable name="mainTextColor" description="Text Color" type="color"            
default="#333" value="#333333">   ...

and click preview button everything is ok save template..