<!-- in css: -->
<style>
  #p-bar-wrapper {
   	display:none;
   	position: fixed;
   	bottom: 0;
   	right: 0;
   	width: 100vw;
   	height: 8px;
   	background-color:#d1d6d8;
   	z-index: 18;
  }
  #progress-bar {
   	background-color:#295b71;
   	width: 0;
   	height: 8px;
   	transition: .3s;
  }
  #progress-bar span {
   	position: absolute;
   	color: #42616c;
   	top: -18px;
   	font-size: 0.8em;
   	font-weight: 600;
   	margin-right:0;
  }
  #run-bar.right-fix {
   	margin-right: -80px;
  }
  #run-bar.right-fix-2one {
   	margin-right: -77px;
  }
</style>

<!-- in html: -->
<div id="p-bar-wrapper">
    <div id="progress-bar"><span id="run-bar"></span></div>
</div>

<!-- in js: -->
<script src="https://code.jquery.com/jquery-3.7.1.min.js" crossorigin="anonymous"></script>
<script type="text/javascript" async>
    document.addEventListener("DOMContentLoaded", function() {
    	  document.addEventListener("scroll", function() {
    	    var scrollTop = document.documentElement.scrollTop || document.body.scrollTop;
    	    var scrollHeight = document.documentElement.scrollHeight || document.body.scrollHeight;
    		var clientHeight = document.documentElement.clientHeight || document.body.clientHeight;
    		var windowWidth = window.innerWidth;
    		var p_bar =	document.getElementById("progress-bar");
    		var scrolled = (scrollTop / (scrollHeight - clientHeight)) * 100;
     
     	//Check if Tablet or smaller than hide all progress bar
    		if( windowWidth < 767 ){
    			return;
    		}
    		else {
    			jQuery("#p-bar-wrapper").css('display','block').show('slow');
    			p_bar.style.width = scrolled + "%";
    			var scrolled_num = parseInt(scrolled, 10);
    			var span_run = document.getElementById("run-bar");
    			jQuery(span_run).text(scrolled_num + '%').css('right',scrolled + '%');
    				if (scrolled == 100){
    					jQuery(span_run).addClass('right-fix-2one').css('color','#21f1af');
    				}
    				else {
    					jQuery(span_run).removeClass('right-fix-2one').css('color','#42616c');
    					if (scrolled > 15){
    						jQuery(span_run).addClass('right-fix');
    					}
    					else {
    						jQuery(span_run).removeClass('right-fix');
    					}
    				}
    			}
    		});
    	});	
</script>