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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>

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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.

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JavaScript

About JavaScript Preprocessors

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

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Babel includes JSX processing.

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HTML 

              
                <link rel="stylesheet" type="text/css" href="//cdn.jsdelivr.net/jquery.slick/1.4.1/slick.css"/>
<!--<link rel="stylesheet" type="text/css" href="//cdn.jsdelivr.net/jquery.slick/1.4.1/slick-theme.css"/>-->
<link rel="stylesheet" type="text/css" href="css/style.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
<script type="text/javascript" src="//cdn.jsdelivr.net/jquery.slick/1.4.1/slick.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/gsap/1.20.3/TweenMax.min.js"></script>

<div class="mouseOver parent parent2">
  <div class="follower"></div>
  <div class="sliderParent">
    <div class="slider" id="featured-content">
         <div>
            <a href="#">
               <figure class="thumbnail ratio-16by9"><img src="http://dummyimage.com/464x16:9/3498db/fff.gif" alt=""></figure>
               <h2>[#1]The greatest breakthroughs in gaming history of the past 25 years</h2>
            </a>
         </div>
         <div>
            <a href="#">
               <figure class="thumbnail ratio-16by9"><img src="http://dummyimage.com/464x16:9/3498db/fff.gif" alt=""></figure>
               <h2>Best game reboots</h2>
            </a>
         </div>
         <div>
            <a href="#">
               <figure class="thumbnail ratio-16by9"><img src="http://dummyimage.com/464x16:9/3498db/fff.gif" alt=""></figure>
               <h2>[#3]The greatest breakthroughs</h2>
            </a>
         </div>
         <div>
            <a href="#">
               <figure class="thumbnail ratio-16by9"><img src="http://dummyimage.com/464x16:9/3498db/fff.gif" alt=""></figure>
               <h2>[#4]The greatest breakthroughs</h2>
            </a>
         </div>
         <div>
            <a href="#">
               <figure class="thumbnail ratio-16by9"><img src="http://dummyimage.com/464x16:9/3498db/fff.gif" alt=""></figure>
               <h2>[#5]The greatest breakthroughs in gaming</h2>
            </a>
         </div>
         <div>
            <a href="#">
               <figure class="thumbnail ratio-16by9"><img src="http://dummyimage.com/464x16:9/3498db/fff.gif" alt=""></figure>
               <h2>[#6]The greatest breakthroughs in gaming history of</h2>
            </a>
         </div>
         <div>
            <a href="#">
               <figure class="thumbnail ratio-16by9"><img src="http://dummyimage.com/464x16:9/3498db/fff.gif" alt=""></figure>
               <h2>[#7]The greatest breakthroughs in gaming history of the past</h2>
            </a>
         </div>
         <div>
            <a href="#">
               <figure class="thumbnail ratio-16by9"><img src="http://dummyimage.com/464x16:9/3498db/fff.gif" alt=""></figure>
               <h2>[#8]The greatest breakthroughs in gaming history of the past 25 years</h2>
            </a>
         </div>
         <div>
            <a href="#">
               <figure class="thumbnail ratio-16by9"><img src="http://dummyimage.com/464x16:9/3498db/fff.gif" alt=""></figure>
               <h2>[#9]The greatest breakthroughs in gaming history of the past 25 years</h2>
            </a>
         </div>
        </div>
      </div>
  </div>
!

CSS 

              
                /* Slick slider */
.sliderParent {
  background-color: #e2e2e2;
  padding: 120px ;
}

.slider {
  background-color: red;
}
.slick-slide img { transition: all 0.3s ease; width: 100%; }
.slick-slide:hover img { opacity: 0.5; height: 125%; left: -12.5%; }
/* Slick slider: Arrows */
.slick-prev, .slick-next { font: normal normal normal 22px/0 FontAwesome; top: 0; width: 1.5em; height: 1.5em; margin: 0; background-color: rgba(0,0,0,0.2); color: transparent; transition: all 0.3s ease; }
.slick-slider:hover .slick-prev, .slick-slider:hover .slick-next { }
.slick-prev:hover, .slick-prev:focus, .slick-next:hover, .slick-next:focus { background-color: rgba(0,0,0,0.8) }
.slick-prev:hover:before, .slick-prev:focus:before, .slick-next:hover:before, .slick-next:focus:before { }
.slick-prev.slick-disabled:before, .slick-next.slick-disabled:before { }
.slick-prev:before, .slick-next:before { font-family: inherit; font-size: inherit; display: inline-block; opacity: 1; color: rgba(255,255,255,0.8); }
.slick-prev { left: 0 }
.slick-prev:before { content: '\f053' }
.slick-next { right: 0 }
.slick-next:before { content: '\f054' }
.slick-dots li button:hover, .slick-dots li button:focus { }
.slick-dots li button:hover:before, .slick-dots li button:focus:before { }
.slick-dots li button:before { }
.slick-dots li.slick-active button:before { }
/* Slick slider: Content */
.slick-slide { }
.slick-slide a { position: relative; display: block; text-decoration: none; }
.slick-slide h2 { font-size: 22px; font-weight: bold; margin: 0 auto; background-color: #fff; position: relative; overflow: hidden; color: #333; padding: 0.5em; width: 80%; margin-top: -7%; }
.slick-slide .thumbnail:after { content: ''; position: absolute; width: 1px; height: 100%; right: 0; top: 0; background-color: rgba(128,128,128,0.66); }


/* Custom cursor */

.parent {
  position: relative;
  overflow: hidden;
  cursor: none;
}

.follower {
  width: 4rem;
  height: 4rem;
  border-radius: 100%;
  overflow: hidden;
  position: absolute;
  background-color: red;
  left: 0;
  z-index: 3;
  top: 0;
  pointer-events: none; /* Very important to prevent the follower from messing up with the mouse move */
  transition: opacity .2s ease-in-out;
}

.follower > * {
  margin: auto;
}
!

JS 

              
                /*Slider function [It is recommended to place a function in a separate JS file, such as "functions.js"]*/
function myCoolSlider() {
        $('#featured-content').slick({
            dots: false,
            infinite: true,
            speed: 300,
            slidesToShow: 4,
            slidesToScroll: 4,
            responsive: [{
                breakpoint: 1200,
                settings: {
                    slidesToShow: 4,
                    slidesToScroll: 4,
                    infinite: true,
                    dots: true
                }
            }, {
                breakpoint: 992,
                settings: {
                    slidesToShow: 3,
                    slidesToScroll: 3
                }
            }, {
                breakpoint: 768,
                settings: {
                    slidesToShow: 3,
                    slidesToScroll: 3
                }
            }, {
                breakpoint: 480,
                settings: {
                    slidesToShow: 2,
                    slidesToScroll: 2
                }
            }]
        });
    }
    /*End of Slider function*/



$(document).ready(function() {

  
/*Calling the function [It is recommended to call a function in a separate JS file, such as "scripts.js"]*/
    myCoolSlider();
/*.................End of call*/


});

// Custom cursor
var parents = document.querySelectorAll('.mouseOver');

function onMouseMove( e ) {
    // Find its child
   var follower = this.querySelector('.follower')
    TweenMax.to(follower, 0.3, {
        x: e.offsetX,
        y: e.offsetY,
        ease:Power4.easeOut
    })
}

function init() {
    // Listen for mouse movement when over either one of the parents    
    for(var i = 0; i < parents.length; i++){
        parents[i].addEventListener('mousemove', onMouseMove)
    }
};

// wait until DOM is ready
document.addEventListener("DOMContentLoaded", function(event) {
    // wait until window, stylesheets, images, links, and other media assets are loaded
    window.onload = function() {    
        // Center the pivot point of the follower
        TweenMax.set('.follower', {
            xPercent: -50,
            yPercent: -50
        })
        // All ready, start!
        init();
     };
});
!
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