<!--Check out the newer version I created using CSS transitions to improve performance! https://codepen.io/Develonaut/pen/kBbhu-->

<html>
  <body>
   <nav>
  <li class="flex-item">THE DEVIL WEARS PRADA</li>
  <li class="flex-item">ABOUT</li>
  <li class="flex-item">NEWS</li>
  <li class="flex-item">SUPPORT</li>
</nav>
  <div class="main-screen">
    <ul class="slideshow">
      <li class="image"></li>
      <li class="image"></li>
      <li class="image"></li>
  </ul>
 </div>
  <section>Put some lovely content here!</section>
      <section>Put some lovely content here!</section>
      <section>Put some lovely content here!</section>
 </body>
</html>


<!--Check out the newer version I created using CSS transitions to improve performance! https://codepen.io/Develonaut/pen/kBbhu-->
@import url(https://fonts.googleapis.com/css?family=Roboto:400,500,700,900);



html, body {
 margin: 0;
 padding: 0;
 height: 100%;
}

::-webkit-scrollbar { 
    display: none; 
}


.main-screen {
  z-index: 98;
  padding: 0;
  height: 100%;
  width: 100%;
}

.slideshow {
  display: block;
  width: 100%;
  padding: 0;
  margin: 0;
  z-index: 99;
  list-style: none;
}

/*The image class in the CSS is a bit delicate, adding extra fluff to this section will create some performance issues on the scroll. Overflow:Hidden seems to smooth out some of the scrolling issues related. */

.image {
    position: absolute;
    z-index: 0;
    width: 100%;
    height: 100%;
    left: 0;
    top: 0;
    overflow: hidden;
    display: block;
}

.image:nth-of-type(1) {
  background: url('http://i62.tinypic.com/acfm0l.jpg') no-repeat center center;
  background-size: cover;
}

.image:nth-of-type(2) {
  background: url('http://i58.tinypic.com/33x8w2h.jpg') no-repeat center center;
  background-size: cover;
}
.image:nth-of-type(3) {
  background: url('http://i57.tinypic.com/dnmy5k.jpg') no-repeat center center;
  background-size: cover;
}

.image.active {
    z-index:2;
}

.image.last-active {
    z-index:1;
}


nav {
  z-index: 9999;
  padding: 15px 0 0 0;
  margin: 0;
  top: 0;
  left: 0;
  color: white;
  list-style: none;
  position: relative;
  overflow: hidden; 
  
  -ms-box-orient: horizontal;
  display: -webkit-box;
  display: -moz-box;
  display: -ms-flexbox;
  display: -moz-flex;
  display: -webkit-flex;
  display: flex;
    
  -webkit-justify-content: space-around;
  justify-content: space-around;
  -webkit-flex-flow: row wrap;
  flex-flow: row wrap;
  -webkit-align-items: stretch;
  align-items: stretch;
}

.flex-item {
  font-weight: bold;
  font-size: .750rem;
  text-align: center;
  font-family: 'Roboto';
  letter-spacing: .15em;
}

.flex-item:nth-of-type(2),  
.flex-item:nth-of-type(3),  
.flex-item:nth-of-type(4) { 
  padding-top: 8px;
}

.flex-item:nth-of-type(1) {
  font-size: 1.5rem; 
  flex-grow: .75;
  text-align: left;
  padding-left: 60px;
 }

.flex-item:nth-of-type(2) { 
  text-align: right;
  flex-grow: 2;
  padding-right: 20px;
}
.flex-item:nth-of-type(3) { 
  flex-grow: 2;
  text-align: left;
  padding-left: 20px;
}
.flex-item:nth-of-type(4) { 
  flex-grow: 1; 
  text-align: right;
  padding-right: 60px;
  padding-left: 15px;
 
}

.flex-item.follow {
  padding: 0;
 }

nav.follow {
    position:fixed; 
    top: 0;
    left: 0;
    background: white;  
    color:black; 
    text-shadow:none;
    width: 100%;
    height: 47px;
    overflow: hidden; 
}


section {
  margin: 100px auto 100px auto;
  height: 500px;
  width: 600px;
  background: tomato;
  text-align: center;
  padding-top: 300px;
  color: white;
  font-size: 4em;
  overflow: hidden; 
}
function slideSwitch() {
    var $active = $('.image.active');

    if ( $active.length === 0 ) $active = $('.image:last');

    var $next =  $active.next().length ? $active.next()
        : $('.image:first');

    $active.addClass('last-active');
        
    $next.css({opacity: 0})
        .addClass('active')
        .animate({opacity: 1}, 600, function() {
            $active.removeClass('active last-active');
        });
}

$(function() {
    setInterval( "slideSwitch()", 6000 );
});



/*JQUERY FOR NAV BAR STARTS HERE*/


if ($("nav").is('*')) {
    var elem = $('nav');
    var offset = elem.offset();
    var topValue =  offset.top + elem.height();
    var width = elem.width();
    $(window).scroll(function (event) {
          var y = $(this).scrollTop();
            if (y >= topValue) {  
                if (!$('nav').hasClass('follow')){	 
                   $("nav").hide().addClass("follow").fadeIn(250);
                }
            } else {
              $(".follow").removeClass("follow");
            }
     });
}

External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

  1. //cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js