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HTML 

              
                <html>
<body>
<div class="menu-wrapper">
	<!-- Once checkbox below is checked the menu pops out -->
	<input type="checkbox" id="menu-activator">
	<div id="menu">
		<div id="icon"><img src="https://blog.codepen.io/wp-content/uploads/2012/06/Button-Black-Large.png"></div>
		<ul id="menu-list">
			<li><h2>Dashboard</h2></li>
			<li><h2>Your Account</h2></li>
			<li><h2>Forums</h2></li>
			<li><h2>Settings</h2></li>
			<li><h2>Site Map</h2></li>
			<li><h2>Help</h2></li>
			<li><h2>Contact Us</h2></li>
		</ul>
	</div>
</div>

<!-- END -->

  
  <h1 class="main-h1"><span>Pure CSS Responsive Nav Slider</span></h1>
  
</body>
</html>
!

CSS 

              
                body {
	background-color: skyblue;
	color: white;
 min-height:700px;
}


.main-h1 {
  margin-top:45px;
  font-weight:bolder;
  font-size:60px;
  font-family: helvetica;
  text-align:center;
  line-height: 80px;
}

.main-h1 span{
  text-decoration: underline;
  border-bottom:solid;
}



/*-------------------------------
              MENU
-------------------------------*/



li a{
	color: white;
	text-decoration: none;
}

li h2{
	font-size: 1.5em;
}


#menu{
	width: 200px;
	height: 100%;
	background: #333;
	position: fixed;
	top: 0px;
	left: -200px;
	-webkit-transition:.3s;
	border-top: solid black;
}
#icon{
	width: 200px;
	height: 200px;
	margin: 5px 0 5px 0;
}

#icon img{
	width: 200px;
}

li{
	padding: 10px;
	transition:.3s; 
	background: -webkit-linear-gradient(#555, black);
	background: linear-gradient(#555, black);
	border-radius: 10px;
}
li:hover{
	font-size: 1.1em;
}

input#menu-activator{
	-webkit-transition:.3s;
	position: fixed;
	top: 0px;
	left: 0px;
	background: red;
	margin:0px;
	cursor: pointer;
}

input#menu-activator:after{
	content: " ";
	position: fixed;
	font-size: 4.5em;
	width: 50px;
	height: 50px;
	background: #333 url("https://imgur.com/P4tWpm7.png") no-repeat center 10px;
	border-top: solid; 
	border-bottom: solid;
	border-right: solid; 
}

input#menu-activator:hover:after{
	background: #444 url("https://imgur.com/P4tWpm7.png") no-repeat center 10px;
}

input#menu-activator[type=checkbox]:checked {
	left: 200px; 
}
input#menu-activator[type=checkbox]:checked:after {
	content: "";
	font-size: 4.5em;
	width: 50px;
	height: 50px;
	position: fixed; 
	background: #333 url("https://imgur.com/h38GnBI.png") no-repeat center 10px;
}

input[type=checkbox]:checked + div#menu{
	left: 0px;
}




/* ---------- MEDIA QUERIES ---------- */



@media screen and (max-width: 600px){

li h2 {
	font-size: 1.2em;
}

li:hover{
padding-top: 11px;
}

#menu{
	border-top: #333;
	width: 100%;
	left: 0px;
	height: 50px;
}

#icon{
	width: 40px;
	height: 40px;
	float: right;
	margin: 5px 5px 0 0;
}

#icon img{
	width: 40px;
}

#menu-activator{
	z-index: 10;
}
#menu-list{
	z-index: 20;
	position: absolute;
	top: -275px;
	background: #333;
	width: 100%;
	padding-top: 2px;
}


/*menu-activator*/


input#menu-activator:after{
	content: " ";
	background: #333 url("https://imgur.com/cLxK5I5.png") no-repeat center 14px;
	border-top: none; 
	border-bottom: none;
	border-right: none; 
	background-size: 75%;
}

input#menu-activator:hover:after{
	background: #444 url("https://imgur.com/cLxK5I5.png") no-repeat center 14px;
	background-size: 75%;
}

input#menu-activator[type=checkbox]:checked {
	left: 0px;
	top: 279px; 
}
input#menu-activator[type=checkbox]:checked:after {
	content: "";
	height: 42px;
	background: #333 url("https://imgur.com/cLxK5I5.png") no-repeat center 7px;
	background-size: 75%;
}

input#menu-activator[type=checkbox]:checked + div#menu{
	left: 0px;
	top: 272px;
}


/* 
---- NO JAVASCRIPT! ----













I relize some things need touching up.


I declare this code PUBLIC DOMAIN

:)

*/
!

JS 

              
                /* -Webkit- works best :) */
!
999px

Console