How To Add Back To Top Button In Blogger

Try Step below:

Copy Code Below: 

<!-- Go top Button -->

<script>

jQuery(document).ready(function() {

var offset = 220;

var duration = 500;

jQuery(window).scroll(function() {

if (jQuery(this).scrollTop() > offset) {

jQuery('.back-to-top').fadeIn(duration);

} else {

jQuery('.back-to-top').fadeOut(duration);

}

});

jQuery('.back-to-top').click(function(event) {

event.preventDefault();

jQuery('html, body').animate({scrollTop: 0}, duration);

return false;

})

});

</script>

<style>

div#page {

max-width: 900px;

margin-left: auto;

margin-right: auto;

padding: 20px;

}

.back-to-top {

position: fixed;

bottom: 2em;

right: 0px;

text-decoration: none;

color: #000000;

background-color: rgba(235, 235, 235, 0.80);

font-size: 12px;

padding: 1em;

display: none;

}

.back-to-top:hover {

text-decoration: none;

}

</style>

<a href="#" class="back-to-top"><img src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgDhLBQ0oL1tAWvlacktZNO_WyLbyph5OZ1QJZGkbS4zODpPuGTKXTzbhod5wNlEyZ0Wiw6P3rPJGcRn-xfrd3a3Z2YvSXwi4LEBJfxD6sWtbpE8gICgdACA5sNbZvTTc2S8zMd77Px7FQ/s1600/4.+Back-To-Top+Button+-+Techtspot.png" alt="Back to Top" / /></a>

by Chorn Samol