Blogger Navbar
Is hiding the blogger navbar legal? Yes, it’s completely legal. Google has not made any law for this yet. Read this happy news.

There are 2 ways to hide the blogger navbar.

Full Hide
Login to your Blogger account.
Go to Template > Edit HTML.
Copy and paste this code to your CSS code (between <b:skin><![CDATA[/* and ]]></b:skin> tags).

#navbar-iframe {
height: 0px;
visibility: hidden;
display: none;
}

Auto Hide
Login to your Blogger account.
Go to Template > Edit HTML.
Copy and paste this code to your CSS code (between <b:skin><![CDATA[/* and ]]></b:skin> tags).

#navbar-iframe{opacity:0.0;filter:alpha(Opacity=0)}
#navbar-iframe:hover{opacity:1.0;filter:alpha(Opacity=100, FinishedOpacity=100)}