Flat icon Responsive Boxes

<!DOCTYPE html>
<html>
<head>
    <title>Flat Responsive Sliding Boxes | Par NGLESSON</title>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <meta name="author" content="Mezgani said">
    <meta name="copyright" content="NGLESSON">
    <title>Flat Responsive Sliding Boxes</title>
    <link rel="stylesheet" href="style.css" media="screen" type="text/css" />
</head>
<body>
<section>
<div id="icon-wrapper">
  <a href="">
    <div class="icons">
      <div class="icon-slide-container">
        <img class="slide-icon"  alt="The Kite Map Logo" height="100" src="view-map.jpg">
        </div>
      </div>
  </a>
  <a href="">
    <div class="icons2">
      <div class="icon-slide-container">
        <img class="slide-icon"  alt="The Kite Map Logo" height="100" src="add-beach.jpg">
        </div>
      </div>
  </a>
  <a href="">
    <div class="icons3">
      <div class="icon-slide-container">
        <img class="slide-icon"  alt="The Kite Map Logo" height="100" src="view-all.jpg">
        </div>
      </div>
  </a>
  <a href="">
    <div class="icons4">
      <div class="icon-slide-container">
        <img class="slide-icon"  alt="The Kite Map Logo" height="100" src="feedback.jpg">
        </div>
      </div>
  </a>
	</div>
</section>
</body>
</html>

body{
  background:#eeeeee;
}

section{
		float: left;
		padding-top: 50px;
		padding-bottom: 100px;
		width: 100%;
		padding-left:0;
		padding-right:0;
}

#icon-wrapper{
	width:100%;
	float:left;
	height:300px;
}

.icons {
	width:25%;
	float:left;
	position:relative;
}
.icons2 {
	width:25%;
	float:left;
	position:relative;
	margin-left:25%;
}
.icons3 {
	width:25%;
	float:left;
	position:relative;
	margin-left:50%;
}
.icons4 {
	width:25%;
	float:left;
	position:relative;
	margin-left:75%;
}

.icon-slide-container{
	height:300px;
	overflow:hidden;
	text-align: left;
	position: absolute;
	float: left;
	width: 300px;
	left: 50%;
	margin-left: -150px;
}

.slide-icon{
  width:300px;
  height:auto;
  position:absolute;
  margin-top:-300px;
  -webkit-transition:.4s ease;
  -moz-transition:.4s ease;
  -ms-transition:.4s ease;
  -o-transition:.4s ease;
  transition:.4 ease;
}
	
.slide-icon:hover{
  position:absolute;
  margin-top:0;
}

@media only screen and (max-width: 1300px) {
  #icon-wrapper{
		width:100%;
		float:left;
		height:170px;
	}
  .icon-slide-container {
		height: 200px;
		overflow: hidden;
		text-align: left;
		position: absolute;
		float: left;
		width: 200px;
		left: 50%;
		margin-left: -100px;
	}
  .slide-icon {
		width: 200px;
		height: auto;
		position: absolute;
		margin-top: -200px;
	}
}

@media only screen and (max-width: 1000px) {
  #home-social-container{
		margin-right: 0;
		margin-left: 0;
		width: 100%;
		padding: 0;
		float: left;
		left: 0;
	}
}

@media only screen and (max-width: 840px) {
  #icon-wrapper{
		width:100%;
		float:left;
		height:650px;
	}
	
	.icon-slide-container {
		height: 300px;
		overflow: hidden;
		text-align: left;
		position: absolute;
		float: left;
		width: 300px;
		left: 50%;
		margin-left: -150px;
	}
	
	.slide-icon {
		width: 300px;
		height: auto;
		position: absolute;
		margin-top: -300px;
	}	
	.icons {
		width: 50%;
		float: left;
		position: relative;
	}
	.icons2 {
		width: 50%;
		float: left;
		position: relative;
		margin-left: 50%;
	}
	.icons3 {
		width: 50%;
		float: left;
		position: relative;
		margin-left: 0%;
		margin-top: 350px;
	}
	.icons4 {
		width: 50%;
		float: left;
		position: relative;
		margin-left: 50%;
	}
}
                        
@media only screen and (max-width: 650px) {
	#icon-wrapper {
		height: 400px;
	}
	#section{
		width: 90%;
		padding-left:5%;
		padding-right:5%;
	}
	.slide-icon {
		width: 200px;
		height: auto;
		position: absolute;
		margin-top: -200px;
	}
	.icon-slide-container {
		height: 200px;
		width: 200px;
		left: 50%;
		margin-left: -100px;
	}
	.icons3 {
		width: 50%;
		position: relative;
		margin-left: 0%;
		margin-top: 230px;
	}
}
                                  
@media only screen and (max-width: 570px) {
	#icon-wrapper {
		height: 300px;
	}
	.slide-icon {
		width: 150px;
		height: auto;
		position: absolute;
		margin-top: -150px;
	}
	.icon-slide-container {
		height: 150px;
		width: 150px;
		left: 50%;
		margin-left: -75px;
	}
	.icons3 {
		width: 50%;
		float: left;
		margin-left: 0%;
		margin-top: 190px;
	}	
}

//window.onload = randomImg;

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    randomImg();
};

var myFile = new Array("https://www.nglesson.com/assets/imgs/menu/solution-technique.jpg",
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