A button used to take the visitor form back to top.After adding to this to your Blog if the click on this it will take you to the top of the page.

STEPS TO BE FOLLOWED BY YOU.

1. Go to Blogger Dashboard
2. Click on Template section.
3. Click on Edit HTML.
4. Search for </body> tag

<a style="position: fixed; bottom:5px; left:5px;"href="#"title="Go Back To Top">Add Text for button </a>
 Note-Replave the Add Text for Button with your button ext like Back to top.