height:3px;
	}
	input[type=range]:focus::-ms-fill-upper {
		background: #ccc;
		height:2px;
	}
</style>

<div id="bg">
	<div class="backgroundSquare" style="background-color:rgb(210, 210, 210);position:absolute;left: 0%;top:25%;"></div>
	<div class="backgroundSquare" style="position:absolute;left: 0%;top:0%;"></div>
	<div class="backgroundSquare" style="background-color:rgb(210, 210, 210);position:absolute;left: 0%;top:75%;"></div>
	<div class="backgroundSquare" style="position:absolute;left: 0%;top:50%;"><