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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.

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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.

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-.

We offer two popular choices: Autoprefixer (which processes your CSS server-side) and -prefix-free (which applies prefixes via a script, client-side).

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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 

              
                <div class="container"> 
<section id="fancyTabWidget" class="tabs t-tabs">
        <ul class="nav nav-tabs fancyTabs" role="tablist">
        
                    <li class="tab fancyTab active">
                    <div class="arrow-down"><div class="arrow-down-inner"></div></div>	
                        <a id="tab0" href="#tabBody0" role="tab" aria-controls="tabBody0" aria-selected="true" data-toggle="tab" tabindex="0"><span class="fa fa-desktop"></span><span class="hidden-xs">Connect</span></a>
                    	<div class="whiteBlock"></div>
                    </li>
                    
                    <li class="tab fancyTab">
                    <div class="arrow-down"><div class="arrow-down-inner"></div></div>
                        <a id="tab1" href="#tabBody1" role="tab" aria-controls="tabBody1" aria-selected="true" data-toggle="tab" tabindex="0"><span class="fa fa-firefox"></span><span class="hidden-xs">Create</span></a>
                        <div class="whiteBlock"></div>
                    </li>
                    
                    <li class="tab fancyTab">
                    <div class="arrow-down"><div class="arrow-down-inner"></div></div>
                        <a id="tab2" href="#tabBody2" role="tab" aria-controls="tabBody2" aria-selected="true" data-toggle="tab" tabindex="0"><span class="fa fa-envira"></span><span class="hidden-xs">Discover</span></a>
                        <div class="whiteBlock"></div>
                    </li>
                    
                    <li class="tab fancyTab">
                    <div class="arrow-down"><div class="arrow-down-inner"></div></div>
                        <a id="tab3" href="#tabBody3" role="tab" aria-controls="tabBody3" aria-selected="true" data-toggle="tab" tabindex="0"><span class="fa fa-mortar-board"></span><span class="hidden-xs">Align</span></a>
                        <div class="whiteBlock"></div>
                    </li> 
                         
                    <li class="tab fancyTab">
                    <div class="arrow-down"><div class="arrow-down-inner"></div></div>
                        <a id="tab4" href="#tabBody4" role="tab" aria-controls="tabBody4" aria-selected="true" data-toggle="tab" tabindex="0"><span class="fa fa-stack-overflow"></span><span class="hidden-xs">Capture</span></a>
                        <div class="whiteBlock"></div>
                    </li>
                    
                    <li class="tab fancyTab">
                    <div class="arrow-down"><div class="arrow-down-inner"></div></div>
                        <a id="tab5" href="#tabBody5" role="tab" aria-controls="tabBody5" aria-selected="true" data-toggle="tab" tabindex="0"><span class="fa fa-question-circle"></span><span class="hidden-xs">Order</span></a>
                        <div class="whiteBlock"></div>
                    </li>
        </ul>
        <div id="myTabContent" class="tab-content fancyTabContent" aria-live="polite">
                    <div class="tab-pane  fade active in" id="tabBody0" role="tabpanel" aria-labelledby="tab0" aria-hidden="false" tabindex="0">
                        <div>
                        	<div class="row">
                            	
                                <div class="col-md-12">
                        			<h2>This is the content of tab one.</h2>
                                    <p>This field is a rich HTML field with a content editor like others used in Sitefinity. It accepts images, video, tables, text, etc. Street art polaroid microdosing la croix taxidermy. Jean shorts kinfolk distillery lumbersexual pinterest XOXO semiotics. Tilde meggings asymmetrical literally pork belly, heirloom food truck YOLO. Meh echo park lyft typewriter. </p>
                                </div>
                                
                            </div>
                        </div>
                    </div>
                    <div class="tab-pane  fade" id="tabBody1" role="tabpanel" aria-labelledby="tab1" aria-hidden="true" tabindex="0">
                        <div class="row">
                            	
                                <div class="col-md-12">
                        			<h2>This is the content of tab two.</h2>
                                    <p>This field is a rich HTML field with a content editor like others used in Sitefinity. It accepts images, video, tables, text, etc. Street art polaroid microdosing la croix taxidermy. Jean shorts kinfolk distillery lumbersexual pinterest XOXO semiotics. Tilde meggings asymmetrical literally pork belly, heirloom food truck YOLO. Meh echo park lyft typewriter. </p>
                                   
                                </div>
                            </div>
                    </div>
                    <div class="tab-pane  fade" id="tabBody2" role="tabpanel" aria-labelledby="tab2" aria-hidden="true" tabindex="0">
                        <div class="row">
                                <div class="col-md-12">
                        			<h2>This is the content of tab three.</h2>
                                    <p>This field is a rich HTML field with a content editor like others used in Sitefinity. It accepts images, video, tables, text, etc. Street art polaroid microdosing la croix taxidermy. Jean shorts kinfolk distillery lumbersexual pinterest XOXO semiotics. Tilde meggings asymmetrical literally pork belly, heirloom food truck YOLO. Meh echo park lyft typewriter. </p>
                                  
                                </div>
                            </div>
                    </div>
                    <div class="tab-pane  fade" id="tabBody3" role="tabpanel" aria-labelledby="tab3" aria-hidden="true" tabindex="0">
                    <div class="row">
                        <div class="col-md-12">
                        			<h2>This is the content of tab four.</h2>
                                    <p>This field is a rich HTML field with a content editor like others used in Sitefinity. It accepts images, video, tables, text, etc. Street art polaroid microdosing la croix taxidermy. Jean shorts kinfolk distillery lumbersexual pinterest XOXO semiotics. Tilde meggings asymmetrical literally pork belly, heirloom food truck YOLO. Meh echo park lyft typewriter. </p>
                                  
                                </div>
                            </div>
                    </div>
                    <div class="tab-pane  fade" id="tabBody4" role="tabpanel" aria-labelledby="tab4" aria-hidden="true" tabindex="0">
                    <div class="row">
                        <div class="col-md-12">
                        			<h2>This is the content of tab five.</h2>
                                    <p>This field is a rich HTML field with a content editor like others used in Sitefinity. It accepts images, video, tables, text, etc. Street art polaroid microdosing la croix taxidermy. Jean shorts kinfolk distillery lumbersexual pinterest XOXO semiotics. Tilde meggings asymmetrical literally pork belly, heirloom food truck YOLO. Meh echo park lyft typewriter. </p>
                                  
                                </div>
                            </div>
                    </div>
                    <div class="tab-pane  fade" id="tabBody5" role="tabpanel" aria-labelledby="tab5" aria-hidden="true" tabindex="0">
                    <div class="row">
                        <div class="col-md-12">
                        			<h2>This is the content of tab six.</h2>
                                    <p>This field is a rich HTML field with a content editor like others used in Sitefinity. It accepts images, video, tables, text, etc. Street art polaroid microdosing la croix taxidermy. Jean shorts kinfolk distillery lumbersexual pinterest XOXO semiotics. Tilde meggings asymmetrical literally pork belly, heirloom food truck YOLO. Meh echo park lyft typewriter. </p>
                                  
                                </div>
                            </div>
                    </div>
        </div>

    </section>
</div>
!

CSS 

              
                .container {
  margin-top:30px;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Source Sans Pro';
  font-weight:700;
}

.fancyTab {
	text-align: center;
  padding:15px 0;
  background-color: #eee;
	box-shadow: 0 0 0 1px #ddd;
	top:15px;	
  transition: top .2s;
}

.fancyTab.active {
  top:0;
  transition:top .2s;
}

.whiteBlock {
  display:none;
}

.fancyTab.active .whiteBlock {
  display:block;
  height:2px;
  bottom:-2px;
  background-color:#fff;
  width:99%;
  position:absolute;
  z-index:1;
}

.fancyTab a {
	font-family: 'Source Sans Pro';
	font-size:1.65em;
	font-weight:300;
  transition:.2s;
  color:#333;
}

/*.fancyTab .hidden-xs {
  white-space:nowrap;
}*/

.fancyTabs {
	border-bottom:2px solid #ddd;
  margin: 15px 0 0;
}

li.fancyTab a {
  padding-top: 15px;
  top:-15px;
  padding-bottom:0;
}

li.fancyTab.active a {
  padding-top: inherit;
}

.fancyTab .fa {
  font-size: 40px;
	width:100%;
	padding: 15px 0 5px;
  color:#666;
}

.fancyTab.active .fa {
  color: #cfb87c;
}

.fancyTab a:focus {
	outline:none;
}

.fancyTabContent {
  border-color: transparent;
  box-shadow: 0 -2px 0 -1px #fff, 0 0 0 1px #ddd;
  padding: 30px 15px 15px;
  position:relative;
  background-color:#fff;
}

.nav-tabs > li.fancyTab.active > a, 
.nav-tabs > li.fancyTab.active > a:focus,
.nav-tabs > li.fancyTab.active > a:hover {
	border-width:0;
}

.nav-tabs > li.fancyTab:hover {
	background-color:#f9f9f9;
	box-shadow: 0 0 0 1px #ddd;
}

.nav-tabs > li.fancyTab.active:hover {
  background-color:#fff;
  box-shadow: 1px 1px 0 1px #fff, 0 0px 0 1px #ddd, -1px 1px 0 0px #ddd inset;
}

.nav-tabs > li.fancyTab:hover a {
	border-color:transparent;
}

.nav.nav-tabs .fancyTab a[data-toggle="tab"] {
  background-color:transparent;
  border-bottom:0;
}

.nav-tabs > li.fancyTab:hover a {
  border-right: 1px solid transparent;
}

.nav-tabs > li.fancyTab > a {
	margin-right:0;
	border-top:0;
  padding-bottom: 30px;
  margin-bottom: -30px;
}

.nav-tabs > li.fancyTab {
	margin-right:0;
	margin-bottom:0;
}

.nav-tabs > li.fancyTab:last-child a {
  border-right: 1px solid transparent;
}

.nav-tabs > li.fancyTab.active:last-child {
  border-right: 0px solid #ddd;
	box-shadow: 0px 2px 0 0px #fff, 0px 0px 0 1px #ddd;
}

.fancyTab:last-child {
  box-shadow: 0 0 0 1px #ddd;
}

.tabs .nav-tabs li.fancyTab.active a {
	box-shadow:none;
  top:0;
}


.fancyTab.active {
  background: #fff;
	box-shadow: 1px 1px 0 1px #fff, 0 0px 0 1px #ddd, -1px 1px 0 0px #ddd inset;
  padding-bottom:30px;
}

.arrow-down {
	display:none;
  width: 0;
  height: 0;
  border-left: 20px solid transparent;
  border-right: 20px solid transparent;
  border-top: 22px solid #ddd;
  position: absolute;
  top: -1px;
  left: calc(50% - 20px);
}

.arrow-down-inner {
  width: 0;
  height: 0;
  border-left: 18px solid transparent;
  border-right: 18px solid transparent;
  border-top: 12px solid #fff;
  position: absolute;
  top: -22px;
  left: -18px;
}

.fancyTab.active .arrow-down {
  display: block;
}

@media (max-width: 1200px) {
  
  .fancyTab .fa {
  	font-size: 36px;
  }
  
  .fancyTab .hidden-xs {
    font-size:22px;
	}
		
}
	
	
@media (max-width: 992px) {
    
  .fancyTab .fa {
  	font-size: 33px;
  }
    
  .fancyTab .hidden-xs {
  	font-size:18px;
    font-weight:normal;
  }
		
}
	
	
@media (max-width: 768px) {
    
  .fancyTab > a {
    font-size:18px;
  }
    
  .nav > li.fancyTab > a {
    padding:15px 0;
    margin-bottom:inherit;
  }
    
  .fancyTab .fa {
    font-size:30px;
  }
    
  .nav-tabs > li.fancyTab > a {
    border-right:1px solid transparent;
    padding-bottom:0;
  }
    
  .fancyTab.active .fa {
    color: #333;
	}
		
}
!

JS 

              
                
$(document).ready(function() {
  

	  
    var numItems = $('li.fancyTab').length;
		
	
			  if (numItems == 12){
					$("li.fancyTab").width('8.3%');
				}
			  if (numItems == 11){
					$("li.fancyTab").width('9%');
				}
			  if (numItems == 10){
					$("li.fancyTab").width('10%');
				}
			  if (numItems == 9){
					$("li.fancyTab").width('11.1%');
				}
			  if (numItems == 8){
					$("li.fancyTab").width('12.5%');
				}
			  if (numItems == 7){
					$("li.fancyTab").width('14.2%');
				}
			  if (numItems == 6){
					$("li.fancyTab").width('16.666666666666667%');
				}
			  if (numItems == 5){
					$("li.fancyTab").width('20%');
				}
			  if (numItems == 4){
					$("li.fancyTab").width('25%');
				}
			  if (numItems == 3){
					$("li.fancyTab").width('33.3%');
				}
			  if (numItems == 2){
					$("li.fancyTab").width('50%');
				}
		  
	 

	
		});

$(window).load(function() {

  $('.fancyTabs').each(function() {

    var highestBox = 0;
    $('.fancyTab a', this).each(function() {

      if ($(this).height() > highestBox)
        highestBox = $(this).height();
    });

    $('.fancyTab a', this).height(highestBox);

  });
});
!
999px

Console