<div class="overlay-navigation">
  <nav role="navigation">
    <ul>
      <li><a href="#" data-content="The beginning">Home</a></li>
      <li><a href="#" data-content="Curious?">About</a></li>
      <li><a href="#" data-content="I got game">Skills</a></li>
      <li><a href="#" data-content="Only the finest">Works</a></li>
      <li><a href="#" data-content="Don't hesitate">Contact</a></li>
    </ul>
  </nav>
</div>

<section class="home">
  <a href="https://codepen.io/fluxus/pen/gPWvZm" target="_blank">Click for a slightly nicer Velocity.js version</a>
  <div class="open-overlay">
    <span class="bar-top"></span>
    <span class="bar-middle"></span>
    <span class="bar-bottom"></span>
  </div>
</section>
@import url(https://fonts.googleapis.com/css?family=Work+Sans:400,300,700|Open+Sans:400italic,300italic);
body {
  background-color: #fff
}

.home {
  width: 100%;
  height: 100vh;
  position: relative;
  background-image: url(https://images.unsplash.com/photo-1446771326090-d910bfaf00f6?ixlib=rb-0.3.5&q=80&fm=jpg&crop=entropy&s=9216e1a8598a8530ce329b41a8f3725d);
  background-size: cover;
  background-position: center center;
}


/* ====================================
Navigation 
==================================== */

.overlay-navigation {
  position: fixed;
  z-index: 99;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: hsla(0, 0%, 0%, 0.8);
  transform: translateY(-100%);
}

.overlay-slide-down {
  transition: all .4s ease-in-out;
  transform: translateY(0)
}

.overlay-slide-up {
  transition: all .8s ease-in-out;
  transform: translateY(-100%)
}

nav,
nav ul {
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
}

nav ul {
  display: flex;
  list-style: none;
}

nav ul li {
  flex-basis: 20%;
  justify-content: center;
  align-items: center;
  height: 100%;
  overflow: hidden;
  transform: translateY(-100%);
}

nav li a {
  position: relative;
  top: 46%;
  color: #fff;
  text-transform: uppercase;
  font-family: 'Work sans', sans-serif;
  font-weight: 300;
  letter-spacing: 4px;
  text-decoration: none;
  display: block;
  text-align: center;
  font-size: 0.9rem;
}

nav li a:before {
  content: '';
  width: 70px;
  height: 2px;
  background-color: #fff;
  position: absolute;
  top: 50%;
  left: 0;
  z-index: 100;
  transform: translateX(-100%);
  opacity: 0;
  transition: all .2s linear;
}

nav li a:after {
  content: attr(data-content);
  font-size: 0.7rem;
  transition: all .2s linear;
  opacity: 0;
  position: absolute;
  z-index: 100;
  color: #fff;
  display: block;
  margin-right: auto;
  margin-left: auto;
  left: 0;
  right: 0;
  bottom: -50px;
  text-transform: none;
  font-family: 'Open sans', serif;
  font-weight: 300;
  font-style: italic;
  letter-spacing: 0;
}

nav li a:hover:before {
  transform: translateX(0);
  opacity: 1;
}

nav li a:hover:after {
  transform: translateY(15px);
  opacity: 1;
}

nav li:nth-of-type(1){background-color: #29363B}
nav li:nth-of-type(2){background-color: #EA495F}
nav li:nth-of-type(3){background-color: #F4837D}
nav li:nth-of-type(4){background-color: #FDCEA9}
nav li:nth-of-type(5){background-color: #99B998}

.slide-in-nav-item {
  animation: slide-in-nav-item 0.4s linear 1 .2s both;
}

.slide-in-nav-item-delay-1 {
  animation: slide-in-nav-item 0.4s linear 1 .4s both;
}

.slide-in-nav-item-delay-2 {
  animation: slide-in-nav-item 0.4s linear 1 .6s both;
}

.slide-in-nav-item-delay-3 {
  animation: slide-in-nav-item 0.4s linear 1 .8s both;
}

.slide-in-nav-item-delay-4 {
  animation: slide-in-nav-item 0.4s linear 1 1s both;
}

.slide-in-nav-item-reverse {
  animation: slide-in-nav-item-reverse .3s linear 1 .5s both;
}

.slide-in-nav-item-delay-1-reverse {
  animation: slide-in-nav-item-reverse .3s linear 1 .4s both;
}

.slide-in-nav-item-delay-2-reverse {
  animation: slide-in-nav-item-reverse .3s linear 1 .3s both;
}

.slide-in-nav-item-delay-3-reverse {
  animation: slide-in-nav-item-reverse .3s linear 1 .2s both;
}

.slide-in-nav-item-delay-4-reverse {
  animation: slide-in-nav-item-reverse .3s linear 1 both;
}


/* ====================================
Burger king
==================================== */

.open-overlay {
  position: absolute;
  right: 5rem;
  top: 3.2rem;
  z-index: 100;
  width: 34px;
  display: block;
  cursor: pointer;
}

.open-overlay span {
  display: block;
  height: 1px;
  background-color: #fff;
  cursor: pointer;
  margin-top: 8px;
}

.animate-top-bar {
  animation: animate-top-bar .6s linear 1 both
}

.animate-bottom-bar {
  animation: animate-bottom-bar .6s linear 1 both
}

.animate-middle-bar {
  animation: animate-middle-bar .6s linear 1 both
}

.animate-out-top-bar {
  animation: animate-out-top-bar .6s linear 1 both
}

.animate-out-bottom-bar {
  animation: animate-out-bottom-bar .6s linear 1 both
}

.animate-out-middle-bar {
  animation: animate-out-middle-bar .6s linear 1 both
}


/* ====================================
Animation keyframes
==================================== */

@keyframes slide-in-nav-item {
  from {
    -webkit-transform: translateY(-100%);
    transform: translateY(-100%)
  }
  to {
    -webkit-transform: translateY(0);
    transform: translateY(0)
  }
}

@keyframes slide-in-nav-item-reverse {
  from {
    -webkit-transform: translateY(0);
    transform: translateY(0)
  }
  to {
    -webkit-transform: translateY(-100%);
    transform: translateY(-100%)
  }
}

@keyframes animate-top-bar {
  0% {
    background-color: #fff;
  }
  50% {
    -webkit-transform: translateY(9px);
    transform: translateY(9px)
  }
  80% {
    -webkit-transform: translateY(5px);
    transform: translateY(5px);
    background-color: #fff
  }
  100% {
    -webkit-transform: translateY(0);
    transform: translateY(0);
    background-color: #29363B;
  }
}

@keyframes animate-bottom-bar {
  0% {
    background-color: #fff;
  }
  50% {
    -webkit-transform: translateY(-9px);
    transform: translateY(-9px)
  }
  80% {
    -webkit-transform: translateY(-5px);
    transform: translateY(-5px);
    background-color: #fff;
  }
  100% {
    -webkit-transform: translateY(0);
    transform: translateY(0);
    background-color: #29363B;
  }
}

@keyframes animate-middle-bar {
  0% {
    background-color: #fff;
  }
  80% {
    background-color: #fff;
  }
  100% {
    background-color: #29363B;
  }
}

@keyframes animate-out-top-bar {
  0% {
    background-color: #29363B
  }
  50% {
    -webkit-transform: translateY(9px);
    transform: translateY(9px)
  }
  80% {
    -webkit-transform: translateY(5px);
    transform: translateY(5px);
    background-color: #29363B
  }
  100% {
    -webkit-transform: translateY(0);
    transform: translateY(0);
    background-color: #FFF;
  }
}

@keyframes animate-out-bottom-bar {
  0% {
    background-color: #29363B
  }
  50% {
    -webkit-transform: translateY(-9px);
    transform: translateY(-9px)
  }
  80% {
    -webkit-transform: translateY(-5px);
    transform: translateY(-5px);
    background-color: #29363B;
  }
  100% {
    -webkit-transform: translateY(0);
    transform: translateY(0);
    background-color: #FFF;
  }
}

@keyframes animate-out-middle-bar {
  0% {
    background-color: #29363B
  }
  80% {
    background-color: #29363B;
  }
  100% {
    background-color: #fff;
  }
}
.home a{
  font-family: "Work Sans", sans-serif;
  color: #fff;
  font-weight: 300;
  font-size: 12px;
  text-transform: uppercase;
  text-decoration: none;
  position: absolute;
  z-index: 10;
  top:50px;
  left:50px;
  padding-bottom: 3px;
  border-bottom: 1px solid #fff;
}
@media (max-width: 640px) {
  nav ul li a {
    font-size: 11px;
  }
  nav li a:after {
    font-size: 0.6rem;
  }
  .open-overlay {
    right: 1rem;
  }
  nav li a:before {
    width: 15px;
  }
}
$('.open-overlay').click(function() {
  var overlay_navigation = $('.overlay-navigation'),
    nav_item_1 = $('nav li:nth-of-type(1)'),
    nav_item_2 = $('nav li:nth-of-type(2)'),
    nav_item_3 = $('nav li:nth-of-type(3)'),
    nav_item_4 = $('nav li:nth-of-type(4)'),
    nav_item_5 = $('nav li:nth-of-type(5)'),
    top_bar = $('.bar-top'),
    middle_bar = $('.bar-middle'),
    bottom_bar = $('.bar-bottom');

  overlay_navigation.toggleClass('overlay-active');
  if (overlay_navigation.hasClass('overlay-active')) {

    top_bar.removeClass('animate-out-top-bar').addClass('animate-top-bar');
    middle_bar.removeClass('animate-out-middle-bar').addClass('animate-middle-bar');
    bottom_bar.removeClass('animate-out-bottom-bar').addClass('animate-bottom-bar');
    overlay_navigation.removeClass('overlay-slide-up').addClass('overlay-slide-down')
    nav_item_1.removeClass('slide-in-nav-item-reverse').addClass('slide-in-nav-item');
    nav_item_2.removeClass('slide-in-nav-item-delay-1-reverse').addClass('slide-in-nav-item-delay-1');
    nav_item_3.removeClass('slide-in-nav-item-delay-2-reverse').addClass('slide-in-nav-item-delay-2');
    nav_item_4.removeClass('slide-in-nav-item-delay-3-reverse').addClass('slide-in-nav-item-delay-3');
    nav_item_5.removeClass('slide-in-nav-item-delay-4-reverse').addClass('slide-in-nav-item-delay-4');
  } else {
    top_bar.removeClass('animate-top-bar').addClass('animate-out-top-bar');
    middle_bar.removeClass('animate-middle-bar').addClass('animate-out-middle-bar');
    bottom_bar.removeClass('animate-bottom-bar').addClass('animate-out-bottom-bar');
    overlay_navigation.removeClass('overlay-slide-down').addClass('overlay-slide-up')
    nav_item_1.removeClass('slide-in-nav-item').addClass('slide-in-nav-item-reverse');
    nav_item_2.removeClass('slide-in-nav-item-delay-1').addClass('slide-in-nav-item-delay-1-reverse');
    nav_item_3.removeClass('slide-in-nav-item-delay-2').addClass('slide-in-nav-item-delay-2-reverse');
    nav_item_4.removeClass('slide-in-nav-item-delay-3').addClass('slide-in-nav-item-delay-3-reverse');
    nav_item_5.removeClass('slide-in-nav-item-delay-4').addClass('slide-in-nav-item-delay-4-reverse');
  }
})

External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

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