tween.js/examples/example-projects/plain-javascript-modules/style.css

html {
	transform-style: preserve-3d;
	perspective: 800px;
}
body {
	background: #fff;
	font-family: Helvetica, Arial, sans;
	transform-style: preserve-3d;
}

a {
	color: #333;
}

h2 {
	font-weight: normal;
}

button {
	cursor: pointer;
	color: #333;
	background: #fff;
	border: 2px solid #333;
	padding: 10px;
	border-radius: 10px;
	font-weight: bold;
	font-size: 20px;
	transition: all 150ms ease-out;
}

button:hover {
	background: #333;
	color: #fff;
}

#info {
	position: absolute;
	top: 0;
	left: 0;
	padding: 1.5em 2em;
}

#info h1 {
	font-size: 3em;
	color: #333;
	margin-top: 0;
	letter-spacing: -0.05em;
}

#info h2 {
	font-size: 2.5em;
	text-transform: uppercase;
	color: #666;
	margin-top: 0;
}

#info p {
	font-size: 2em;
	line-height: 1em;
	color: #aaa;
	max-width: 10em;
}