<meta name="viewport" content="width=device-width,initial-scale=1,user-scalable=no">
<style>
body {
    margin: 0;
}

div {
    position: absolute;
    height: 200px;
    width: 200px;
}

#container {
    background-color: black;
    -webkit-perspective: 400;
}

#face {
    -webkit-transform: rotateX(45deg);
    background-color: red;
}
</style>
<div id="container">
    <div id="face"></div>
</div>