If your Blog is full of contents and have too lengthy posts then you can add "Back to Top" button to your Blog (or Website). It helps your readers prevent scrolling again and again to go to top.
What you have to do is simply

1. Login to your Blogger
2. Select Blog you want to use
3. Go to Design Tab
4. Add Widget
5. Select HTML Widget and put this code below

<!-------------sarakuj.com Send to Top Code------------------><a href='#' style='display:scroll;position:fixed;bottom:5px;right:130px;' title='Back to Top'><img src='https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgD49RyGEItZfYLLNZkAerxORbhPVs5xsPs5Asi6tkd2ZxaxP_lNaZDpeiDfC5PXEDRxDhMU11clF3gSsvSrOYTImwohIeAcrMe51IK_BxVIvrP3bi_HFIzWqzfCs5HxsUsegWynv_yJoM/s320/sarakuj.com-top.png' alt="SaraKuj.Com" width="40" height="45"/></a> <!-------------http://sarakuj.com ------------------>