<header id="header-main">
<a href="#" class="brand">Agency</a>
<a href="#" id="burger"> <span></span> <span></span> <span></span> </a>

<nav id="nav-main">    
  <ul>
    <li><a href="#">PROJECTS</a>
	  <ul>
	    <li><a href="#">Link #1</a></li>
	    <li><a href="#">Link #2</a></li>
	    <li><a href="#">Link #3</a></li>
	  </ul>  
    </li>
    <li><a href="#">ABOUT US</a></li>
    <li><a href="#">CONTACT</a></li>
  </ul>  
	<div id="nav-foot">
		
			<div class="col"><h5>JUAREZ</h5>	(555) 1204 0433</div>
			<div class="col"><h5>LONDON</h5> (555) 1107 2691</div>
			<div class="col"><h5>NEWYORK</h5> (555) 257 0482</div>
			<div class="col-6 nav-social">
				<a href="#"><i class="fa fa-instagram"></i></a>
				<a href="#"><i class="fa fa-facebook-official"></i></a>
				<a href="#"><i class="fa fa-twitter"></i></a>
				<a href="#"><i class="fa fa-whatsapp"></i></a>
			</div>
		
	</div>
</nav>
</header>
<section id="content">
  <article><h1>We are Creative</h1>
   
    <p>Building the future of brands with amazing UX</p>
  </article>
</section>
<section id="foot">
  <p>Feel free to use this menu on your projects or starter themes ;)</p>
  <code>Code is Death Metal</code>
  
 <a href="https://twitter.com/nodws" class="btn-twtr" target="_b">Follow me on Twitter</a>
</section>
body {
  background: #100F0F;
  color: #696d6d;
  font-family: 'Barlow Semi Condensed', sans-serif;
}
body.abrido{
  overflow:hidden
}
#header-main {
  position: fixed;
  box-shadow: 0 0 0 0 rgba(243, 243, 243, 1) inset;
  height: 100px;
  width: 100%;
  z-index:99;
  transition: all .2s;
}

#header-main.arre {
  position: fixed;
  box-shadow: 0 93px 0 0 rgba(243, 243, 243, 1) inset;
}

.brand {
  position: absolute;
  top: .6em;
  left: 2em;
  z-index: 6;
  font-family: sans-serif;
  text-transform: uppercase;
  color:#ddd;
  font-weight:600;
  font-size:2em;
  padding:.2em .5em;
  border:2px solid rgba(200,200,200,0);
  text-decoration:none;
  margin: 0;
  transition:.2s
}
.brand:hover, .abrido .brand{
   border:2px solid rgba(200,200,200,1);
}
.arre .brand{
  color:#333
}
.arre .brand:hover{
   border:2px solid rgba(60,60,60,.7);
}
#burger {
  position: absolute;
  top: 30px;
  right: 40px;
  height: 20px;
  display: block;
  width: 20px;
  padding: 10px;
  box-sizing:border-box;
  background: rgba(255, 255, 255, 0);
  border: 4px solid rgba(255, 255, 255, 0);
  border-radius: 3px;
  z-index: 5;
}

#burger span {
  position: absolute;
  width: 100%;
  height: 2px;
  top: 50%;
  margin-top: -1px;
  left: 0;
  display: block;
  background: #ddd;
  transition: .4s;
}

#burger:hover {
  background: #eee;
  border-color: #eee
}

#burger:hover span {
  background-color: #333 !important
}
#burger span:first-child {
  top: 3px;
}

#burger span:last-child {
  top: 17px;
}

#burger:hover {
  cursor: pointer;
}

#burger.abrido span {
  opacity: 0;
  top: 50%;
  transform: rotate(45deg);
  background-color: #fff
}


#burger.abrido span:first-child {
  opacity: 1;
  transform: rotate(45deg);
}

#burger.abrido span:last-child {
  opacity: 1;
  transform: rotate(-45deg);
}

#nav-main {
  background: rgba(45, 45, 45, 0);
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100px;
  z-index: 3;
  transition: .4s;
  transition-delay: .5s;
  overflow: hidden;
}

#nav-main ul {
  text-align: center;
  position: absolute;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  top: 27vh;
  left: 0;
  right: 0;
  padding: 0;
}

#nav-main ul li {
  opacity: 0;
  position: relative;
  transform: translateY(15px);
  transition: .5s;
  transition-delay: 0s;
  list-style: none;
  display: inline-block;
  width: fit-content
}

#nav-main li a {
  text-decoration: none;
  text-transform: uppercase;
  color: #dc3545;
  font-weight: 700;
  font-family: sans-serif;
  display: block;
  padding: 20px;
  font-size: 2em
}

#nav-main a:hover {
  color: #fff
}

#nav-main ul ul {
  text-align: left;
  top: 20px;
  left: auto;
  right: -100px;
  padding: 0;
  margin: 0px !important;
}

#nav-main li ul li {
  opacity: 1;
  transform: translateX(-80px);
  transform-origin: 0% center -20px;
  width: 0px;
  white-space: nowrap;
  overflow: hidden
}

#nav-main li ul a {
  font-size: 1.3em;
  padding: 10px 0 0 30px;
}

#nav-main ul li:hover li {
  opacity: 1;
  width: 120px;
  transform: translateX(0px);
}

#nav-main.abrido {
  height: 100%;
  background: #020304e0;
  transition-delay: 0s;
}

#nav-main.abrido>ul>li {
  opacity: 1;
  transform: translateY(0px);
  transition-delay: .5s;
}

#nav-foot {
  display:flex;
  padding: 20px 0;
  position: absolute;
  bottom: -50px;
  left: 15px;
  right: 15px;
  text-align: center;
  transition: .4s;
  opacity: 0;
  visibility: hidden;
  color: rgba(255, 255, 255, 0.9);
  border-top: 1px solid
}

.abrido #nav-foot { 
  bottom: 0;
  opacity: 1;
  visibility: visible;
  transition: 1.4s;  
}

#nav-foot .col{
  width:20vw
}

#nav-foot h5 {
  font-weight: 900;
  font-size: 1em;
  margin:0 0 .5em 0
}

#nav-foot .nav-social {
  text-align: right;
}

#nav-foot .nav-social a {
  transform-style: preserve-3d;
  color: #ddd;
  padding: 5px 10px;
  font-size: 1.8rem;
  text-decoration: none;
}

#nav-foot .nav-social a i {
  display: inline-block;
  position: relative;
  top: 0;
  transition: .2s;
}

#nav-foot .nav-social a:hover i {
  color: #dc3545;
  top: -5px;
  transition: .2s;
  animation: flpp infinite 5s;
}

@keyframes flpp {
  0% {
    transform: rotateY(0deg);
  }
  50% {
    transform: rotateY(180deg);
  }
  100% {
    transform: rotateY(0deg);
  }
}


#content {
  position:relative;
  padding-top: 30vh;
  background: #0d111d url(https://images.unsplash.com/photo-1486625703180-884c5c453194?ixlib=rb-0.3.5&q=85&fm=jpg&crop=entropy&cs=srgb&ixid=eyJhcHBfaWQiOjE0NTg5fQ&s=b86b1f769150f99a2478177efc9678a2) center no-repeat;
  background-size:cover;
  background-attachment:fixed;
  height: 100vh;
  display:flex;
  justify-content:center;
  z-index:1
}
#content:after{
  content:"";
  display:block;
  width:100%;
  height:100%;
  background:rgba(16, 15, 25,1);
  position:absolute;
  top:0;
  left:0;
  opacity:.8;
  z-index:-1
}
#content article{
  width:60vw;
  min-width:300px;
  color:#ddd;
  text-align:center;
  font-size:2em;
  font-style:italic;
  text-shadow:1px 1px 3px rgba(0,0,0,.7)
}
#foot {
  padding-top: 20vh;
  height: 80vh;
  text-align:center
}

#foot code{
  display:block;
  padding:50px 0;
  font-size:.9em;
  font-style:italic
}
#foot code:after{
  content:"\272D";
  display:inline-block;
  transform:rotate(180deg);
  position:relative;
  top:-2px;
  left:5px
}
/*RESPONSIVE STYLING SOLD SEPARATELY*/






/* follow me @nodws */
.btn-twtr{
  color:#ddd;
  border:2px solid;
  border-radius:3px;
  text-decoration:none;
  display:inline-block;
  padding:5px 10px;
  font-family:sans-serif;
  font-weight:600;
  background:rgba(0,0,0,0.2);
  box-shadow:0 0 0px 3px rgba(0,0,0,0.2);
  opacity:0.8;
}.btn-twtr:hover{color:#0af;}
.btn-twtr:after{content:"\1F426";padding-left:5px}
//By @nodws

$(window).scroll(function(){
  
  let oppai = $(this).scrollTop(); 
  
  $('#content article').css({opacity:100/oppai,filter: 'blur('+oppai/100+'px)'});  
    $('#content').css({opacity: 100/oppai}); 
  
if(oppai>190){
	if(!$('body').hasClass('abrido'))
		$('#header-main').addClass('arre'); 
  }
else{
  $('#header-main').removeClass('arre');
    }
});

$('#burger').on('click',function(e) {
  
	e.preventDefault();
  
	$('#nav-main, body, #burger').toggleClass('abrido');
  
	if($('#header-main').hasClass('arre'))
		{$('#header-main').removeClass('arre').addClass('arreno');}
	else if($('#header-main').hasClass('arreno'))
		{	$('#header-main').removeClass('arreno');
			setTimeout(()=>{$('#header-main').addClass('arre')},800);}

});

External CSS

  1. https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css
  2. https://fonts.googleapis.com/css?family=Barlow+Semi+Condensed:400,500,600

External JavaScript

  1. https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js