Go to Design>Edit HTML in your Blogger dashboard
Using your browser's search function, locate the closing </b:skin> tag in your template's HTML markup.
Immediately before this line, paste the following section of code:
#navbar-iframe, #navbar, .navbar {height:0px; visibility:hidden; display:none; margin: 0 !important;}
Click Preview to see the changes as the way it should, then click "Save".
That's all!
