Adding a Leaderboard/Banner Ad in Blogger
If you don’t know whether you have an old or new Blogspot template, search for “region-inner header-inner” in your HTML template. If you find it, you have a new template. If you don’t find it, search for “skiplinks.” If you find it, you have an old template.
New Blogger “Designer” Templates
Go to Template – Edit HTML in your Blogger Dashboard to launch the Template Editor. NOTE: you may need to use the small arrows on the left side of the editor to expand the b:skin section of code.
Once you’ve done that, find this in your HTML template (you may need to use the arrows to expand the areas after the body tag):
<div class="region-inner header-inner">
Then add this below it – your ad code plus some extra stuff:
<div align="center">
YOUR 728 or 970 AD CODE HERE
</div>
Save your changes.
Older Blogger Templates (including Minima)
Go to Template – Edit HTML in your Blogger Dashboard to launch the Template Editor. NOTE: you may need to use the small arrows on the left side of the editor to expand the b:skin section of code.
Find this in your HTML template (you may need to use the arrows to expand the areas after the body tag):
<!-- skip links for text browsers -->
<span id="skiplinks" style="display: none;">
<a href="#main">skip to main </a> |
<a href="#sidebar">skip to sidebar</a>
</span>
Then add this under it:
<div align="center">
YOUR 728 or 970 AD CODE HERE
</div>
Save your changes.