Edit in JSFiddle

<div class="container">
    <div class="parent">
        <div class="child">
            I'm your sun.
        </div>
    </div>
</div>

.container {
    perspective: 300px
}

.parent {
    margin: 0 auto;
    width: 300px;
    height: 300px;
    border: 1px solid #ddd;
    transform: rotateX(45deg);
	transform-style: preserve-3d;
}

.child {
    margin-top: 40px;
    padding: 100px 0;
    width: 100%;
    background-color: #ddd;
    text-align: center;
    color: #999;
    transform: rotateX(-30deg);
}