Usually, after creating a new blog, u will have navbar at the top of your blog.
How to hide or remove Blogger NavBar? Follow below steps:
1. Goto blogger.com & login
2. On Dashboard, click Layout > Edit HTML 

3. On Edit Template, put below css declaration.navbar {between <b:skin><![CDATA[ and ]]></b:skin>
visibility: hidden;
display: none;
}
(click the image to enlarge)
for example:<b:skin><![CDATA[
/* maybe theme info here */
/* maybe variable definitions here */
.navbar {
visibility: hidden;
display: none;
}
]]></b:skin>
4. Save Template
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