Add a Cool Floating Button Go To Top in Your Blogger/Blogspot.

Step 1: Log in to your Dashboard--> Design- -> Edit HTML

Step 2: Click on "Expand Widget Templates"

Step 3: Scroll down to where you see this </body> tag.

Step 4: Copy below code and paste it just before the </body> tag.

<!--Back to top Start itbooster.blogspot.com-->
<a title="Back to TOP" style="position: fixed; right: 15px; bottom: 15px; outline: medium none; border: 0px none;" href="#"><img border="0" alt="Back to TOP" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh5EZd5A7GSslhGoQsuQZCIfd7MIVPsA8s2Skb85js5iPswblIMEKaoVxum5k8yaAKIOKeFT_b4_B_39Az_3A7yNsEUqK2H2o2mLoLYMazVk8kj8g6cKtCQxWl61v-PjzSgmgTPrLuF80E/"></a>
<!--Back to top End itbooster.blogspot.com-->

 Step 5: Now Save Template You are Done.!

Thanks.