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HTML

<!DOCTYPE html>
<html>
<head>
	<title>Live Demo - Redesigned</title>
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta name="robots" content="noindex, nofollow" />
  <link rel="stylesheet" href="styles-new.css">
</head>
<body>

CSS

/*--------------------------------------------------------------
/** 1. Normalize
--------------------------------------------------------------*/
html, body {
  position: relative;
  width: 100%;
  height: 100%;
  font-family: 'Poppins', 'Montserrat', sans-serif;
}
html {
  font-size: 100%;
  font-family: sans-serif;
  -ms-text-size-adjust: 100%;
  -webkit-text-size-adjust: 100%;
}
body {
  margin: 0;
  font-style: normal;
  -ms-text-size-adjust: 100%;
  -webkit-text-size-adjust: 100%;
  text-rendering: optimizeLegibility
}
article, aside, details, figcaption, figure, footer, header, main, menu, nav, section, summary {
  display: block;
}
audio, canvas, progress, video {
  display: inline-block;
  vertical-align: baseline;
}
audio:not([controls]) {
  display: none;
  height: 0;
}
[hidden],
template {
  display: none;
}
a {
  background-color: transparent;
  outline: 0;
  text-decoration: none;
  cursor: pointer;
  -webkit-text-decoration-skip: objects;
  -webkit-transition: all 0.3s ease;
  transition: all 0.3s ease;
}
abbr[title] {
  border-bottom: none;
  text-decoration: underline;
  text-decoration: underline dotted;
}
b, strong, .strong {
  font-weight: bolder;
}
dfn {
  font-style: italic;
}
mark {
  background-color: #ffd166;
  color: #2b2d42;
}
small {
  font-size: 80%;
}
sub,
sup {
  font-size: 75%;
  line-height: 0;
  position: relative;
  vertical-align: baseline;
}
sup {
  top: -0.5em;
}
h1 {
  font-size: 2em;
  margin: 0.67em 0;
}
h1, h2, h3, h4, h5, h6, ul, ol, dl, li, dd, small {
  padding: 0;
}
img {
  border: 0;
}
svg:not(:root) {
  overflow: hidden;
  display: block;
}
figure {
  margin: 1em 40px;
}
hr {
  height: 0;
  overflow: visible;
  -webkit-box-sizing: content-box;
  -moz-box-sizing: content-box;
  box-sizing: content-box;
}
pre {
  overflow: auto;
}
code, kbd, pre, samp {
  font-family: 'Fira Code', 'Consolas', monospace;
  font-size: 1em;
}
blockquote::before, blockquote::after,
q::before, q::after {
  content: '';
}
blockquote, q {
  quotes: "" "";
}
button, input, optgroup, select, textarea {
  color: inherit;
  font: inherit;
  margin: 0;
}
button, input {
  overflow: visible;
}
button, select {
  text-transform: none;
}
select {
  text-indent: 45px;
}
button,
html input[type="button"],
input[type="reset"],
input[type="submit"] {
  -webkit-appearance: button;
  cursor: pointer;
}
button[disabled],
html input[disabled] {
  cursor: default;
}
button::-moz-focus-inner,
input::-moz-focus-inner {
  border: 0;
  padding: 0;
}
input {
  line-height: normal;
}
input[type="checkbox"],
input[type="radio"] {
  padding: 0;
  outline: 0;
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
}
input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
  height: auto;
}
input[type="search"] {
  -webkit-appearance: textfield;
  outline-offset: -2px;
}
input[type="search"]::-webkit-search-cancel-button,
input[type="search"]::-webkit-search-decoration {
  -webkit-appearance: none;
}
::-webkit-file-upload-button {
  -webkit-appearance: button;
  font: inherit;
}
fieldset {
  border: 1px solid #8d99ae;
  margin: 0 2px;
  padding: 0.35em 0.625em 0.75em;
}
legend {
  border: 0;
  padding: 0;
}
textarea {
  overflow: auto;
}
optgroup {
  font-weight: bold;
}
table {
  border-collapse: collapse;
  border-spacing: 0;
  width: 100%;
}
td, th {
  padding: 0;
}

/*--------------------------------------------------------------
/** 2. Base Styles
--------------------------------------------------------------*/
*, *::before, *::after {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
}
html {
  box-sizing: border-box;
}
body {
  font-family: 'Poppins', sans-serif;
  font-style: normal;
  font-weight: normal;
  font-size: 18px;
  line-height: 170%;
  color: #8d99ae;
}
body.no-scroll {
    overflow: hidden;
}
a {
  color: #ef233c;
}
a:hover {
  color: #d90429;
  text-decoration: none;
}
.light a {
  color: #edf2f4;
}
.light a:hover,
.light a:active,
.light a:focus {
  color: #ffffff;
}
.light b, .light strong {
  color: #ffffff;
}
ul, ol {
  margin-top: 0;
  margin-bottom: 10px;
  margin-left: 0;
  padding: 0;
  padding-left: 30px;
}
ul ul,
ol ul,
ul ol,
ol ol {
  margin-top: 5px;
  margin-bottom: 0;
}
ul li, ol li {
  margin-bottom: 5px;
  outline: 0;
}
ul li.active a{
  color: #ef233c;
}
ul li:last-child,
ol li:last-child {
  margin-bottom: 0;
}
.list-unstyled {
  padding-left: 0;
  list-style: none;
}
.list-inline {
  padding-left: 0;
  list-style: none;
  margin-left: -0.5rem;
}
.list-inline > li {
  display: inline-block;
  padding-left: 1rem;
  padding-right: 1rem;
}
dl {
  margin-top: 0;
  margin-bottom: 2rem;
}
dt,
dd {
  line-height: 1.42857143;
}
dt {
  font-weight: bold;
}
dd {
  margin-left: 0;
}
button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  outline: 0;
}
figure {
  margin: 0;
}
img {
  display: inline-block;
  border: 0;
  max-width: 100%;
  height: auto;
  vertical-align: middle;
}
::selection {
  background: rgba(239, 35, 60, 0.8);
  color: #edf2f4;
  text-shadow: none;
}
::-moz-selection {
  background: rgba(239, 35, 60, 0.8);
  color: #edf2f4;
  text-shadow: none;
}
::-webkit-input-placeholder {
  color: #8d99ae; /* WebKit browsers */
  -webkit-transition: color .2s;
  transition: color .2s;
}
::-moz-placeholder {
  color: #8d99ae; /* Mozilla Firefox 19+ */
  -webkit-transition: color .2s;
  transition: color .2s;
}
:-ms-input-placeholder {
  color: #8d99ae;/* Internet Explorer 10+ */
  -webkit-transition: color .2s;
  transition: color .2s;
}
::placeholder {
  color: #8d99ae;
  -webkit-transition: color .2s;
  transition: color .2s;
}

.nav {
	position: fixed;
  width: 220px;
  bottom: 0;
  right: 200px;
  padding: 22px;
  border-radius: 12px 0 0 12px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: space-between;
  color: #edf2f4;
  transform: translate3d(100%, 0, 0);
  transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
.nav.show {
  transform: translate3d(0, 0, 0);
}
.btn {
	display: block;
  padding: 0px 12px;
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
	border-radius: 10px;
	background: #ef233c;
	color: #edf2f4;
  box-shadow: rgba(0, 0, 0, 0.15) 0px 5px 15px;
	transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
.btn:hover {
	background: #d90429;
  transform: translateY(-3px);
}
.devices {
	display: flex;
}
.devices a {
  padding: 3px;
}
#template-selector {
	background: #2b2d42;
  color: #edf2f4;
  border: 2px solid #8d99ae;
}
#iframe-view {
	margin: auto;
  background: #ffffff;
  height: 100vh;
  box-shadow: rgba(0, 0, 0, 0.1) 0px 10px 50px;
}
body {
	overflow: hidden;
	text-align: center;
	background: #2b2d42;
}
.btn-settings {
  padding: 14px;
  border: 4px solid #edf2f4;
  width: 160px;
  height: 65px;
  display: flex;
  justify-content: center;
  align-items: center;
  color: #edf2f4;
  border-radius: 50px;
  transition: all 0.4s cubic-bezier(0.68, -0.6, 0.32, 1.6);
}
.btn-settings:hover {
  transform: scale(1.1) rotate(2deg);
  color: #ffffff;
  border-color: #ffffff;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}
@media only screen and (max-width: 991px) {
  a.device {
    display:none;
  }
}

(function($) {

"use strict";

$(document).ready(function(){
    
    // Add animation effect on page load
    setTimeout(function() {
      $('#iframe-view').css('opacity', '0').animate({
        opacity: 1
      }, 800);
    }, 200);

$('#template-selector').on('change', function() {
  		var demo_url = this.value;
  		var product_url = $(this).find(':selected').data('product');

$("#iframe-view").css('opacity', '0.5');
      setTimeout(function() {
        $("#iframe-view").attr("src", demo_url).animate({
          opacity: 1
        }, 600);
      }, 300);
  	});

$('a.device').click(function(e){
      e.preventDefault();
      var screen_size = $(this).attr('href');
      var iframe_width = 640;
      var iframe_height = 600;

switch(screen_size) {
        case '#desktop':
          iframe_width = "100%";
          iframe_height = "100%";
        break;

case '#laptop':
          iframe_width = "1280px";
          iframe_height = "1024px";
        break;

case '#tab':
          iframe_width = "1024px";
          iframe_height = "1366px";
        break;

default:
        case '#phone':
          iframe_width = "375px";
          iframe_height = "812px";
        break;
      }
      
      $('#iframe-view').animate({
        opacity: 0.7
      }, 200, function() {
        $(this).attr("width", iframe_width).attr("height", iframe_height);
        $(this).animate({
          opacity: 1
        }, 400);
      });
    });
    
    // Optional: Display navigation when user moves mouse to bottom right
    $(document).on('mousemove', function(e) {
      var pageWidth = $(window).width();
      var pageHeight = $(window).height();
      
      if (e.pageX > pageWidth - 100 && e.pageY > pageHeight - 100) {
        $('#demo-page-nav').addClass('show');
      } else if (e.pageX < pageWidth - 250 || e.pageY < pageHeight - 150) {
        $('#demo-page-nav').removeClass('show');
      }
    });
    
  });

})(jQuery);