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HTML

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HTML preprocessors can make writing HTML more powerful or convenient. For instance, Markdown is designed to be easier to write and read for text documents and you could write a loop in Pug.

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Adding Classes

In CodePen, whatever you write in the HTML editor is what goes within the <body> tags in a basic HTML5 template. So you don't have access to higher-up elements like the <html> tag. If you want to add classes there that can affect the whole document, this is the place to do it.

About the <head>

In CodePen, whatever you write in the HTML editor is what goes within the <body> tags in a basic HTML5 template. If you need things in the <head> of the document, put that code here.

!
Insecure Resource

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CSS

About CSS Preprocessors

CSS preprocessors help make authoring CSS easier. All of them offer things like variables and mixins to provide convenient abstractions.

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CSS Base

About CSS Base

It's a common practice to apply CSS to a page that styles elements such that they are consistent across all browsers. We offer two of the most popular choices: normalize.css and a reset. Or, choose Neither and nothing will be applied.

Vendor Prefixing

About Vendor Prefixing

To get the best cross-browser support, it is a common practice to apply vendor prefixes to CSS properties and values that require them to work. For instance -webkit- or -moz-.

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JavaScript

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JavaScript preprocessors can help make authoring JavaScript easier and more convenient.

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Babel includes JSX processing.

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HTML 

              
                <header>
<div id="nav">
  <ul>
    <li><a href="#welcome" class="scroller" data-offset="-140">Welcome</a></li>
    <li><a href="#portfolio" class="scroller" data-offset="-139">Portfolio</a></li>
    <li><a href="#contact" class="scroller" data-offset="-139">Contact</a></li>
  </ul>
</div>
</header>

<body>
<div class="content">
  
  
  <div class="page" id="page1">
    <a class="anchor" id="welcome"></a>
      <div class="title ttl1">Welcome</div>
    <p><strong>Hello.</strong>  Thanks for the view.</p>
      <p>Love it. Fork it. Comment it.</p>
      
      <p>This is just a little demo of a one page scroller with smooth transitions.  I am using the artic_scroll plugin and its pretty sweet.</p>
    
      <p>Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Aenean commodo ligula eget dolor. Aenean massa. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Donec quam felis, ultricies nec, pellentesque eu, pretium quis, sem. Nulla consequat massa quis enim. Donec pede justo, fringilla vel, aliquet nec, vulputate eget, arcu. In enim justo, rhoncus ut, imperdiet a, venenatis vitae, justo. Nullam dictum felis eu pede mollis pretium. Integer tincidunt. Cras dapibus. Vivamus elementum semper nisi. Aenean vulputate eleifend tellus. Aenean leo ligula, porttitor eu, consequat vitae, eleifend ac, enim. Aliquam lorem ante, dapibus in, viverra quis, feugiat a, tellus. Phasellus viverra nulla ut metus varius laoreet. Quisque rutrum. Aenean imperdiet. Etiam ultricies nisi vel augue. Curabitur ullamcorper ultricies nisi. Nam eget dui. Etiam rhoncus. Maecenas tempus, tellus eget condimentum rhoncus, sem quam semper libero, sit amet adipiscing sem neque sed ipsum. Nam quam nunc, blandit vel, luctus pulvinar, hendrerit id, lorem. Maecenas nec odio et ante tincidunt tempus. Donec vitae sapien ut libero venenatis faucibus. Nullam quis ante. Etiam sit amet orci eget eros faucibus tincidunt. Duis leo. Sed fringilla mauris sit amet nibh. Donec sodales sagittis magna. Sed consequat, leo eget bibendum sodales, augue velit cursus nunc,</p>      
  </div>

  <div class="page-divider pgd1"></div>
    
  <div class="page" id="page2">
    <a class="anchor" id="portfolio"></a>
      <div class="title">Portfolio</div>
      <p>Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Aenean commodo ligula eget dolor. Aenean massa. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Donec quam felis, ultricies nec, pellentesque eu, pretium quis, sem. Nulla consequat massa quis enim. Donec pede justo, fringilla vel, aliquet nec, vulputate eget, arcu. In enim justo, rhoncus ut, imperdiet a, venenatis vitae, justo. Nullam dictum felis eu pede mollis pretium. Integer tincidunt. Cras dapibus. Vivamus elementum semper nisi. Aenean vulputate eleifend tellus. Aenean leo ligula, porttitor eu, consequat vitae, eleifend ac, enim. Aliquam lorem ante, dapibus in, viverra quis, feugiat a, tellus. Phasellus viverra nulla ut metus varius laoreet. Quisque rutrum. Aenean imperdiet. Etiam ultricies nisi vel augue. Curabitur ullamcorper ultricies nisi. Nam eget dui. Etiam rhoncus. Maecenas tempus, tellus eget condimentum rhoncus, sem quam semper libero, sit amet adipiscing sem neque sed ipsum. Nam quam nunc, blandit vel, luctus pulvinar, hendrerit id, lorem. Maecenas nec odio et ante tincidunt tempus. Donec vitae sapien ut libero venenatis faucibus. Nullam quis ante. Etiam sit amet orci eget eros faucibus tincidunt. Duis leo. Sed fringilla mauris sit amet nibh. Donec sodales sagittis magna. Sed consequat, leo eget bibendum sodales, augue velit cursus nunc,</p>
  </div>

  <div class="page-divider pgd2"></div>
  
  <div class="page" id="page3">
    <a class="anchor" id="contact"></a>
      <div class="title">Contact</div>
      <p>Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Aenean commodo ligula eget dolor. Aenean massa. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Donec quam felis, ultricies nec, pellentesque eu, pretium quis, sem. Nulla consequat massa quis enim. Donec pede justo, fringilla vel, aliquet nec, vulputate eget, arcu. In enim justo, rhoncus ut, imperdiet a, venenatis vitae, justo. Nullam dictum felis eu pede mollis pretium. Integer tincidunt. Cras dapibus. Vivamus elementum semper nisi. Aenean vulputate eleifend tellus. Aenean leo ligula, porttitor eu, consequat vitae, eleifend ac, enim. Aliquam lorem ante, dapibus in, viverra quis, feugiat a, tellus. Phasellus viverra nulla ut metus varius laoreet. Quisque rutrum. Aenean imperdiet. Etiam ultricies nisi vel augue. Curabitur ullamcorper ultricies nisi. Nam eget dui. Etiam rhoncus. Maecenas tempus, tellus eget condimentum rhoncus, sem quam semper libero, sit amet adipiscing sem neque sed ipsum. Nam quam nunc, blandit vel, luctus pulvinar, hendrerit id, lorem. Maecenas nec odio et ante tincidunt tempus. Donec vitae sapien ut libero venenatis faucibus. Nullam quis ante. Etiam sit amet orci eget eros faucibus tincidunt. Duis leo. Sed fringilla mauris sit amet nibh. Donec sodales sagittis magna. Sed consequat, leo eget bibendum sodales, augue velit cursus nunc,</p>
  </div>
  
</div>
</body>

<footer>
  <p>Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Aenean commodo ligula eget dolor. Aenean massa. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Donec quam felis, ultricies nec, pellentesque eu, pretium quis, sem. <br>Thanks.</p>
</footer>
!

CSS 

              
                @import url(https://fonts.googleapis.com/css?family=Open+Sans:300,800);

body {
  background: #A1FF9E;
  font-family: 'Open Sans';
  font-size: 1.3em;
  padding: 0;
  margin: 0;
}
a {
  text-decoration: none;
  color: white;
}
#nav {
  background: url("http://thumb1.shutterstock.com/display_pic_with_logo/1487123/134611310/stock-vector-colorful-geometric-background-with-triangles-vector-eps-134611310.jpg");
  position: fixed;
  z-index: 1000;
  top: 0;
  left: 0;
  width: 100%;
}
#nav ul{
  list-style: none;
}
#nav li {
  display: inline-block;
  padding: 10px;
}
#nav li:hover {
  background: aquamarine;
}
#nav li:hover a{
  color: black;
}
.content {
  padding-top: 90px;
}
.anchor {
  display: block; /*this is important!*/
}
.title {
  position: relative;
  display: block;
  top: -50px;
  padding: 20px 0;
  font-size: 1.9em;
}
.title:before{
  font-size: 1.5em;
  content: "\005B";
}
.title:after{
  font-size: 1.5em;
  content: "\005D";
}
.page-divider {
  margin: 0 auto;
  width: 100%;
  min-height: 500px;
  height: 100%; 
  overflow: hidden;
  background-size: cover;
}
.pgd1{background-image: url("http://image.shutterstock.com/display_pic_with_logo/719740/162308759/stock-photo-young-trendy-girl-in-sunglasses-and-a-knitted-hat-sitting-on-a-skateboard-on-the-background-of-a-162308759.jpg");}
.pgd2{background-image: url("http://image.shutterstock.com/display_pic_with_logo/683038/155224421/stock-photo-group-of-three-young-adults-laughing-and-having-a-good-time-155224421.jpg");}
.page {
  min-width: 200px;
  padding: 50px 100px;
}
#page1 {background: LightBlue;}
#page2 {background: MediumSpringGreen;}
#page3 {background: SlateGray;}

footer {
  min-height: 200px;
  padding: 100px;
}
footer p {
  -webkit-column-count: 2;
  -webkit-column-gap: 40px;
  -moz-column-count: 2;
  -moz-column-gap: 40px;
  -o-column-count: 2;
  -o-column-gap: 40px;
  column-count: 2;
  column-gap: 40px;
}
!

JS 

              
                (function ($) {
    $.fn.arctic_scroll = function (options) {

        var defaults = {
            elem: $(this),
            speed: 500
        };
        var options = $.extend(defaults, options);

        options.elem.click(function(event){     
            event.preventDefault();
            var offset = ($(this).attr('data-offset')) ? $(this).attr('data-offset') : false,
                position = ($(this).attr('data-position')) ? $(this).attr('data-position') : false;         
            if (offset) {
                var toMove = parseInt(offset);
                $('html,body').stop(true, false).animate({scrollTop: ($(this.hash).offset().top + toMove) }, options.speed);
            } else if (position) {
                var toMove = parseInt(position);
                $('html,body').stop(true, false).animate({scrollTop: toMove }, options.speed);
            } else {
                $('html,body').stop(true, false).animate({scrollTop: ($(this.hash).offset().top) }, options.speed);
            }
        });

    };
})(jQuery);

$(function(){
    $(".scroller").arctic_scroll({
        speed: 600
    });
});
!
999px

Console