១-សូមចូលទៅកាន់គណនីប្លក់របស់អ្នក
២-ចូលទៅកាន់ Theme បន្ទាប់មក Edit HTML
៣-ចម្លងកូដខាងក្រោមដាក់ពីខាងក្រោម <head>
<link crossorigin='anonymous' href='https://use.fontawesome.com/releases/v5.8.2/css/all.css' integrity='sha384-oS3vJWv+0UjzBfQzYUhtDYW+Pj2yciDJxpsK1OYPAYjqT085Qq/1cq5FLXAZQ7Ay' rel='stylesheet'/>៤-ចម្លងកូដខាងក្រោមដាក់ពីខាងលើ ]]></b:skin>
/* Back to Top៥-ចម្លងកូដខាងក្រោមដាក់ពីខាងលើ </body>
----------------------------------------------- */
.back-top{display:none;z-index:1010;width:32px;height:32px;position:fixed;bottom:25px;right:25px;cursor:pointer;overflow:hidden;font-size:13px;color:#fff;text-align:center;line-height:32px;box-shadow:0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);border-radius:2px}
.back-top:before{content:'';position:absolute;top:0;left:0;right:0;bottom:0;background-color:#673AB7;transition:all 0.7s}
.back-top:after{content:'\f077';position:relative;font-family:"Font Awesome 5 Free";font-weight:600;transition:all 0.7s}
.back-top:hover:before,.back-top:hover:after,.nav-active .back-top:after,.nav-active .back-top:before{background:#111}
<script type='text/javascript'>៦-ចុចពាក្យ Save Theme៕
//<![CDATA[
$(".back-top").each(function(){var a=$(this);$(window).on("scroll",function(){100<=$(this).scrollTop()?a.fadeIn(250):a.fadeOut(250)}),a.click(function(){$("html, body").animate({scrollTop:0},500)})});
//]]>
</script>
<div class='back-top' title='Back to Top'></div>
