style.css

/* these are not necessary */

html {
    background-color:white;
}

#container {
	background-color:white;
	border:1px solid #ccc;
	margin:0;
    padding:0;
    width:100%;
    height:100%;
}

div {
    -webkit-tap-highlight-color:rgba(0,0,0,0);
}

#item4 {
	background-color:#ffc;
	position:absolute;
	bottom:200px;
	left:200px;
	width:200px;
	height:200px;
	border:1px solid yellow;
	-webkit-transform: skew(45deg);
	-moz-transform: skew(45deg);
	-o-transform: skew(45deg);
}