How to hide the Nav Bar above--really effective method!

add texts between＜style type="text/css"＞and＜/style＞ as bellow:

#b-navbar{height:0px; visibility:hidden;}
#blog-header {margin-top:0px;}
#wrapper {margin-top:0px !important;}

and after you do so,Blogger NavBar will be really hidden，but that will leave a blank area where it sit previously, so you should do as follow to finish:

#content {width:920px;margin:0 auto;text-align:left;}

modify the margin setting from 0 to -45px,and that's ok,enjoy it!

(well considered that with different templates,the exactly css tag will be tiny different literally)

i place some pics here sorry: