Hope you're signed in to your blogger account. Go to the dashboard/ design/ setting or whatever you call it.
Now go to the Layout.
Find the Navbar (Usually at the top)
Click the Edit option > Select Off > Save
To know more - Click here.
Assuming that you've already removed the Navigation bar from your blogger site. Now After removing the navbar, your header will be look like the image below:
If you have a close look at the above image, you will see there is an unnecessary empty space instead of navigation bar. And it looks very odd. Let's remove it. But before that, make sure you're signed in to your blogger account and navigation bar is removed from your site. Now start:
Go to the design or dashboard from your blogger account.
- Hit on the Template option from the left pane.
- Hit on Edit HTML button. (Backup your template to avoid mishap!)
- Here you will get the HTML of your template. You need to add a small code in it.
- Click on the HTML Code Box then press Ctrl + F to enable search.
- Type "body" in the search box and press Enter.
body
{
padding: 0;
margin:0;
min-width: 900px;
color: #28241F;
margin-top: -45px;
}