<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>

<div id="header">  
  <div id="navegas-menua-nav">
  <div id="close"></div>
  <ul id="menuy-ul">
  <li><a href="#">CSS</a></li>
  <li><a href="#">КОДЫ</a></li>
  <li><a href="#">ШРИФТЫ</a></li>
  <li><a href="#">КОНТАКТЫ</a></li>
  </ul>
  </div>
   
  <div id="apedsanukes">
  <ul id="full-ul">
  <li><a href="#">CSS</a></li>
  <li><a href="#">КОДЫ</a></li>
  <li><a href="#">ШРИФТЫ</a></li>
  <li><a href="#">КОНТАКТЫ</a></li>
  </ul>
  <div id="nav-icon"></div>
  </div>  
</div>

#header {  
  position: relative;
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
  display: table;
  text-align: center;
  background: url(фон) no-repeat center center fixed;  
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
}

#apedsanukes{
  position: fixed;
  top: 0;
  left: 0;
  height: 80px;
  width: 100%;
  background: -webkit-linear-gradient(rgba(10, 10, 10, 0.8), rgba(16, 16, 16, 0.5), rgba(3,3,3,0.01)); /* For Safari 5.1 to 6.0 */
  background: -o-linear-gradient(rgba(10, 10, 10, 0.8), rgba(16, 16, 16, 0.5), rgba(3,3,3,0.01)); /* For Opera 11.1 to 12.0 */
  background: -moz-linear-gradient(rgba(10, 10, 10, 0.8), rgba(16, 16, 16, 0.5), rgba(3,3,3,0.01)); /* For Firefox 3.6 to 15 */
  background: linear-gradient(rgba(10, 10, 10, 0.8), rgba(16, 16, 16, 0.5), rgba(3,3,3,0.01));
  z-index:9;
}

ul{
  list-style-type: none;
  margin: 0;
  text-align: center;
  padding: 0;
  line-height: 80px;
}

li{
  display: inline;
  margin: 10px;
}

a{
  font-size: 18px;
  text-decoration: none;
  color: #fff;
  padding: 0 6px;
  border-bottom: 0px solid #fff;
  border-top: 0px solid #fff;
  -webkit-transition: all 2s ease-in-out;
  -moz-transition: all 2s ease-in-out;
  -o-transition: all 2s ease-in-out;
  transition: all 0.2s ease-in-out;
}

a:hover{
  color: #E8CD26;
  border-bottom: 2px solid #E8CD26;
  border-top: 2px solid #E8CD26;
  padding: 6px;
}

#navegas-menua-nav{
  position: fixed;
  width: 90%;
  margin: 5% 5%;
  border-radius: 14px;
  height: 90%;
  background: rgba(3,3,5,0.9);
  z-index: 9;
  box-shadow: 3px 3px 30px #000;
  display: none;
}

#nav-icon{
  position: absolute;
  top: 24px;
  left: -15px;
  margin-left: 50%;
  width: 30px;
  height: 30px;
  background: url(http://zornet.ru/Abavaga/safrsda.png) no-repeat;
  background-size: 100%;
  display: none;
}

#close{
  position: absolute;
  top: -10px;
  right: -10px;
  width: 30px;
  height: 30px;
  background: url(http://zornet.ru/Abavaga/close-icon.png) no-repeat;
  background-size: 100%;
  cursor: pointer;
  -webkit-transition: all 2s ease-in-out;
  -moz-transition: all 2s ease-in-out;
  -o-transition: all 2s ease-in-out;
  transition: all 0.2s ease-in-out;
}

#close:hover{
  top: -12px;
  right: -12px;
  width: 34px;
  height: 34px;
}

h1{
  display: table-cell;
  vertical-align: middle;
  font-size: 26px;
  color: rgba(255,255,255,0.8);
  text-decoration: underline;
}

h1 span{
  font-size: 18px;
}

#second-screen{
  position: relative;
  width: 100%;
  height: 100%;
  display: table;
  text-align: center;
  background: #ddd;
}

#second-screen h1{
  color: #333;
  text-align: right;
  padding: 50px;
  text-shadow: 3px 3px 10px #666;
  text-decoration: none;
  border-left: 10px dotted #E8CD26;
  border-bottom: 10px dotted #666;
}

@media (max-width: 500px){
  full-ul{
  display: none;
  }
   
  #full-ul{
  display: none;
  }
   
  ul{
  line-height: 40px;
  }
   
  li{
  display: block;
  border-bottom: 1px solid #333;
  }
   
  a:hover{
  border: none;
  }
   
  #nav-icon{
  display: inline;
  cursor: pointer;
  }
}

$( "#nav-icon" ).click(function() {
  $( "#apedsanukes" ).fadeOut("slow", function() {
  $( "#navegas-menua-nav" ).fadeIn( "slow")
  $( "#menuy-ul" ).fadeIn("slow");
  });
});

$( "#close" ).click(function() {
  $( "#navegas-menua-nav" ).fadeOut( "slow", function() {
  $( "#navegas-menua-nav" ).fadeOut( "slow", function() {
  $( "#apedsanukes" ).fadeIn("slow");
  });
  });
});