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CSS

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Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

HTML

            
              	<div class="section">			
		<div class="center-wrap">			
			<h1 class="text-center">Scroll</h1>
			<p class="text-center mb-0">Look at the right bottom corner<span class="color-gradient-red-yellow"><i class="uil uil-chart-down size-22 ml-2"></i></span></p>
		</div>
	</div>				
	<div class="section">
	</div>				
	<div class="section">
	</div>	
	
	<a class="navbar-brand" href="https://front.codes" target="_blank">
		<img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/1462889/logo.png" alt="FrontCodes Logo">
	</a>
									
	<div class="switch">
		<div class="circle"></div>
	</div>	
								
	<div class="progress-wrap">
		<svg class="progress-circle svg-content" width="100%" height="100%" viewBox="-1 -1 102 102">
			<path d="M50,1 a49,49 0 0,1 0,98 a49,49 0 0,1 0,-98"/>
		</svg>
	</div>
            
          
!

CSS

            
              

/* Please ❤ this if you like it! */



@import url('https://fonts.googleapis.com/css?family=Muli:200,200i,300,300i,400,400i,600,600i,700,700i,800,800i,900,900i&subset=latin-ext,vietnamese');
@import url('https://fonts.googleapis.com/css?family=Raleway:100,100i,200,200i,300,300i,400,400i,500,500i,600,600i,700,700i,800,800i,900,900i&subset=latin-ext');



:root {
	font-size: 20px;
	--red: #da2c4d;
	--yellow: #f8ab37;
	--green: #2ecc71;
	--white: #ffffff;
	--grey-light: #f2f7f9;
	--grey: #ecedf3;
	--black: #080808;
	--black-blue: #1f2029;
	--black-blue-light: #353746;
	--black-blue-light-2: #404255;
	--black-blue-light-3: #4b4d64;
	--black-light: #424455;
}
body{
    font-family: 'Raleway', sans-serif;
	font-size: 16px;
	font-weight: 500;
	line-height: 1.65;
	color: var(--grey);
	background-color: var(--black-blue);
	overflow-x: hidden;
	letter-spacing: 0.2px;
	-webkit-transition: all 200ms linear;
	transition: all 200ms linear; 
	text-rendering: optimizeLegibility !important;
	-webkit-font-smoothing: antialiased !important;
}
body.light{
	color: var(--black-light);
}
h1{
    font-family: 'Muli', sans-serif;
	font-size: 12vw;
	font-weight: 900;
	line-height: 1;
	color: var(--white);
	-webkit-transition: all 200ms linear;
	transition: all 200ms linear; 
}
body.light h1{
	color: var(--black);
}
body.light{
	background-color: var(--white);
}
.navbar-brand{
	height: 55px;
	position: fixed;
	top: 50px;
	left: 70px;
	z-index: 3333;
	width: auto;
	display: inline-block;
	margin: 0;
	padding: 0;
	-webkit-transition : all 0.3s ease-out;
	transition : all 0.3s ease-out;
}
.navbar-brand::before{
	position: absolute;
	content: '';
	top: -13px;
	left: 50%;
	width: 80px;
	transform: translateX(-50%);
	height: calc(100% + 26px);
	opacity: 0;
	z-index: -1;
	background-image: linear-gradient(260deg, var(--grey), var(--grey-light));
	animation: border-transform 10s linear infinite alternate forwards;
	-webkit-transition: all 200ms linear;
    transition: all 200ms linear;
}
.navbar-brand::after{
	position: absolute;
	content: '';
	top: -13px;
	left: 50%;
	width: 80px;
	transform: translateX(-50%);
	height: calc(100% + 26px);
	opacity: 1;
	z-index: -1;
	background-image: linear-gradient(160deg, var(--black-blue-light-3), var(--black-blue-light));
	animation: border-transform 10s linear infinite alternate forwards;
	-webkit-transition: all 200ms linear;
    transition: all 200ms linear;
}
.navbar-brand img{
	padding: 7px 0;
	height: 100%;
	width: auto;
	display: block;
	-webkit-transition : all 0.3s ease-out;
	transition : all 0.3s ease-out;
}
@-webkit-keyframes border-transform{
    0%,100% { border-radius: 63% 37% 54% 46% / 55% 48% 52% 45%; } 
	14% { border-radius: 40% 60% 54% 46% / 49% 60% 40% 51%; } 
	28% { border-radius: 54% 46% 38% 62% / 49% 70% 30% 51%; } 
	42% { border-radius: 61% 39% 55% 45% / 61% 38% 62% 39%; } 
	56% { border-radius: 61% 39% 67% 33% / 70% 50% 50% 30%; } 
	70% { border-radius: 50% 50% 34% 66% / 56% 68% 32% 44%; } 
	84% { border-radius: 46% 54% 50% 50% / 35% 61% 39% 65%; } 
}
@keyframes border-transform{
    0%,100% { border-radius: 63% 37% 54% 46% / 55% 48% 52% 45%; } 
	14% { border-radius: 40% 60% 54% 46% / 49% 60% 40% 51%; } 
	28% { border-radius: 54% 46% 38% 62% / 49% 70% 30% 51%; } 
	42% { border-radius: 61% 39% 55% 45% / 61% 38% 62% 39%; } 
	56% { border-radius: 61% 39% 67% 33% / 70% 50% 50% 30%; } 
	70% { border-radius: 50% 50% 34% 66% / 56% 68% 32% 44%; } 
	84% { border-radius: 46% 54% 50% 50% / 35% 61% 39% 65%; } 
}
body.light .navbar-brand::before{
	opacity: 1;
}
body.light .navbar-brand::after{
	opacity: 0;
}

.section {
    position: relative;
	width: 100%;
	display: block;
	overflow: hidden;
	height: 100vh;
}
.center-wrap {
    position: absolute;
	width: 100%;
	display: block;
	overflow: hidden;
	left: 0;
	top: 50%;
	transform: translateY(-50%);
	z-index: 2;
}
.color-gradient-red-yellow {
	background: linear-gradient(160deg, var(--red), var(--yellow));
	-webkit-background-clip: text;
	-webkit-text-fill-color: transparent;
}
.color-gradient-red-yellow .uil:before {
	background: linear-gradient(160deg, var(--red), var(--yellow));
	-webkit-background-clip: text;
	-webkit-text-fill-color: transparent;
}
.size-22 {
	font-size: 22px;
}

/* #Progress
================================================== */

.progress-wrap {
	position: fixed;
	right: 50px;
	bottom: 50px;
	height: 46px;
	width: 46px;
	cursor: pointer;
	display: block;
	border-radius: 50px;
	box-shadow: inset  0 0 0 2px rgba(255,255,255,0.2);
	z-index: 10000;
	opacity: 0;
	visibility: hidden;
	transform: translateY(15px);
	-webkit-transition: all 200ms linear;
    transition: all 200ms linear;
}
.progress-wrap.active-progress {
	opacity: 1;
	visibility: visible;
	transform: translateY(0);
}
.progress-wrap::after {
	position: absolute;
	font-family: 'unicons';
	content: '\e84b';
	text-align: center;
	line-height: 46px;
	font-size: 24px;
	color: var(--grey);
	left: 0;
	top: 0;
	height: 46px;
	width: 46px;
	cursor: pointer;
	display: block;
	z-index: 1;
	-webkit-transition: all 200ms linear;
    transition: all 200ms linear;
}
.progress-wrap:hover::after {
	opacity: 0;
}
.progress-wrap::before {
	position: absolute;
	font-family: 'unicons';
	content: '\e84b';
	text-align: center;
	line-height: 46px;
	font-size: 24px;
	opacity: 0;
	background-image: linear-gradient(298deg, var(--red), var(--yellow));
	-webkit-background-clip: text;
	-webkit-text-fill-color: transparent;
	left: 0;
	top: 0;
	height: 46px;
	width: 46px;
	cursor: pointer;
	display: block;
	z-index: 2;
	-webkit-transition: all 200ms linear;
    transition: all 200ms linear;
}
.progress-wrap:hover::before {
	opacity: 1;
}
.progress-wrap svg path { 
	fill: none; 
}
.progress-wrap svg.progress-circle path {
	stroke: var(--grey);
	stroke-width: 4;
	box-sizing:border-box;
	-webkit-transition: all 200ms linear;
    transition: all 200ms linear;
}
body.light .progress-wrap {
	box-shadow: inset  0 0 0 2px rgba(0,0,0,0.2);
}
body.light .progress-wrap::after {
	color: var(--black-blue);
}
body.light .progress-wrap svg.progress-circle path {
	stroke: var(--black-blue);
}
.switch,
.circle {
	-webkit-transition: all 300ms linear;
	transition: all 300ms linear; 
} 
.switch {
	width: 80px;
	height: 4px;
	border-radius: 27px;
	background-image: linear-gradient(298deg, var(--red), var(--yellow));
	position: fixed;
	right: 50px;
	top: 75px;
	display: block;
	margin: 0 auto;
	text-align: center;
	opacity: 1;
  z-index: 33333;
    transition: all 300ms linear;
}
.circle {
	cursor: pointer;
	position: absolute;
	top: 50%;
	transform: translateY(-50%);
	left: -5px;
	width: 40px;
	height: 40px;
	border-radius: 50%;
	background: var(--black-blue-light-3);
	box-shadow: 0 4px 4px rgba(26,53,71,0.25), 0 0 0 1px rgba(26,53,71,0.07);
	animation: border-transform 10s linear infinite alternate forwards;
}
.circle:hover {
	box-shadow: 0 8px 8px rgba(26,53,71,0.25), 0 0 0 1px rgba(26,53,71,0.07);
}
.circle:before {
	position: absolute;
	font-family: 'unicons';
	content: '\eac1';
	top: 0;
	left: 0;
	z-index: 2;
	font-size: 20px;
	line-height: 40px;
	text-align: center;
	width: 100%;
	height: 40px;
	opacity: 1;
	color: var(--grey);
	-webkit-transition: all 300ms linear;
	transition: all 300ms linear; 
}
.circle:after {
	position: absolute;
	font-family: 'unicons';
	content: '\eb8f';
	top: 0;
	left: 0;
	z-index: 2;
	font-size: 20px;
	line-height: 40px;
	text-align: center;
	width: 100%;
	height: 40px;
	color: var(--yellow);
	opacity: 0;
	-webkit-transition: all 300ms linear;
	transition: all 300ms linear; 
}
.switched {
}
.switched .circle {
	left: 45px;
	box-shadow: 0 4px 4px rgba(26,53,71,0.25), 0 0 0 1px rgba(26,53,71,0.07);
	background: var(--black-blue);
}
.switched .circle:hover {
	box-shadow: 0 8px 8px rgba(26,53,71,0.25), 0 0 0 1px rgba(26,53,71,0.07);
}
.switched .circle:before {
	opacity: 0;
}
.switched .circle:after {
	opacity: 1;
}
            
          
!

JS

            
              

/* Please ❤ this if you like it! */



(function($) { "use strict";

	//Switch dark/light
	
	$(".switch").on('click', function () {
		if ($("body").hasClass("light")) {
			$("body").removeClass("light");
			$(".switch").removeClass("switched");
		}
		else {
			$("body").addClass("light");
			$(".switch").addClass("switched");
		}
	});
		
	$(document).ready(function(){"use strict";
	
		//Scroll back to top
		
		var progressPath = document.querySelector('.progress-wrap path');
		var pathLength = progressPath.getTotalLength();
		progressPath.style.transition = progressPath.style.WebkitTransition = 'none';
		progressPath.style.strokeDasharray = pathLength + ' ' + pathLength;
		progressPath.style.strokeDashoffset = pathLength;
		progressPath.getBoundingClientRect();
		progressPath.style.transition = progressPath.style.WebkitTransition = 'stroke-dashoffset 10ms linear';		
		var updateProgress = function () {
			var scroll = $(window).scrollTop();
			var height = $(document).height() - $(window).height();
			var progress = pathLength - (scroll * pathLength / height);
			progressPath.style.strokeDashoffset = progress;
		}
		updateProgress();
		$(window).scroll(updateProgress);	
		var offset = 50;
		var duration = 550;
		jQuery(window).on('scroll', function() {
			if (jQuery(this).scrollTop() > offset) {
				jQuery('.progress-wrap').addClass('active-progress');
			} else {
				jQuery('.progress-wrap').removeClass('active-progress');
			}
		});				
		jQuery('.progress-wrap').on('click', function(event) {
			event.preventDefault();
			jQuery('html, body').animate({scrollTop: 0}, duration);
			return false;
		})
		
		
	});
	
})(jQuery); 
            
          
!
999px

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