How to hide "Navbar Blogger"

Before erasing navbar blogger (Navigation Bar), it’s better if I inform that this method is one of the Blogger TOS violation. If you still want to erase it, you can use the script below:

/* CSS to hid navigation bar */

#navbar {
height:10px;
visibility:hidden;
display:none;
}

How to do:
In the Edit HTML page, put the code above under the code