// source https://jsbin.com

index.html

<style id="jsbin-css">
@import url('https://fonts.googleapis.com/css?family=Anton|Roboto');

.word {
	font-family: 'Anton', sans-serif;
	perspective: 1000px; 
	perspective-origin: 200px 40px;
}

.word span {
	cursor: pointer;
	display: inline-block;
	font-size: 100px;
	user-select: none;
	line-height: .8;
}

.word span:nth-child(1).active {
	animation: balance 1.5s ease-out;
	transform-origin: 0% 100% 0px;
}

@keyframes balance {
	0%, 100% {
		transform: rotate(0deg);
	}
	
	30%, 60% {
		transform: rotate(-45deg);
	}
}

.word span:nth-child(2).active {
	animation: shrinkjump 1s ease-in-out;
	transform-origin: bottom center;
}

@keyframes shrinkjump {
	10%, 35% {
		transform: scale(2, .2) translate(0, 0);
	}
	
	45%, 50% {
		transform: scale(1) translate(0, -150px);
	}
	
	80% {
		transform: scale(1) translate(0, 0);
	}
}

.word span:nth-child(3).active {
	animation: falling 2s ease-out;
	transform-origin: bottom center;
}

@keyframes falling {
	12% {
		transform: rotateX(240deg);
	}
	
	24% {
		transform: rotateX(150deg);
	}
	
	36% {
		transform: rotateX(200deg);
	}
	
	48% {
		transform: rotateX(175deg);
	}
	
	60%, 85% {
		transform: rotateX(180deg);
	}
	
	100% {
		transform: rotateX(0deg);
	}
}

.word span:nth-child(4).active {
	animation: rotate 1s ease-out;
}

@keyframes rotate {
	20%, 80% {
		transform: rotateY(180deg);
	}
	
	100% {
		transform: rotateY(360deg);
	}
}

.word span:nth-child(5).active {
	animation: toplong 1.5s linear;
}

@keyframes toplong {
	10%, 40% {
		transform: translateY(-48vh) scaleY(1);
	}
	
	90% {
		transform: translateY(-48vh) scaleY(4);
	}
}

/* Other styles */
body {
	background-color: black;
	color: #fff;
	display: flex;
	font-family: 'alphabetic', sans-serif;
	justify-content: center;
	align-items: center;
	flex-direction: row;
	height: 100vh;
	margin: 0;
}

.fixed {
	position: fixed;
	top: 40px;
	left: 50%;
	transform: translateX(-50%);
}

footer {
	position: fixed;
	bottom: 0;
	left: 0;
	right: 0;
	text-align: center;
	letter-spacing: 1px;
}

footer i {
	color: red;
}

footer a {
	color: #3C97BF;
	text-decoration: none;
}
</style>
<div class="word">
	<span>O</span>
	<span>S</span>
	<span>I</span>
	<span>N</span>
	<span>T</span>
</div>
<script id="jsbin-javascript">
let spans = document.querySelectorAll('.word span');
spans.forEach((span, idx) => {
	span.addEventListener('click', (e) => {
		e.target.classList.add('active');
	});
	span.addEventListener('animationend', (e) => {
		e.target.classList.remove('active');
	});
	
	// Initial animation
	setTimeout(() => {
		span.classList.add('active');
	}, 750 * (idx+1))
});
</script>
<script id="jsbin-source-html" type="text/html">
<div class="word">
	<span>O</span>
	<span>S</span>
	<span>I</span>
	<span>N</span>
	<span>T</span>
</div>

</script>

<script id="jsbin-source-css" type="text/css">@import url('https://fonts.googleapis.com/css?family=Anton|Roboto');

.word {
	font-family: 'Anton', sans-serif;
	perspective: 1000px; 
	perspective-origin: 200px 40px;
}

.word span {
	cursor: pointer;
	display: inline-block;
	font-size: 100px;
	user-select: none;
	line-height: .8;
}

.word span:nth-child(1).active {
	animation: balance 1.5s ease-out;
	transform-origin: 0% 100% 0px;
}

@keyframes balance {
	0%, 100% {
		transform: rotate(0deg);
	}
	
	30%, 60% {
		transform: rotate(-45deg);
	}
}

.word span:nth-child(2).active {
	animation: shrinkjump 1s ease-in-out;
	transform-origin: bottom center;
}

@keyframes shrinkjump {
	10%, 35% {
		transform: scale(2, .2) translate(0, 0);
	}
	
	45%, 50% {
		transform: scale(1) translate(0, -150px);
	}
	
	80% {
		transform: scale(1) translate(0, 0);
	}
}

.word span:nth-child(3).active {
	animation: falling 2s ease-out;
	transform-origin: bottom center;
}

@keyframes falling {
	12% {
		transform: rotateX(240deg);
	}
	
	24% {
		transform: rotateX(150deg);
	}
	
	36% {
		transform: rotateX(200deg);
	}
	
	48% {
		transform: rotateX(175deg);
	}
	
	60%, 85% {
		transform: rotateX(180deg);
	}
	
	100% {
		transform: rotateX(0deg);
	}
}

.word span:nth-child(4).active {
	animation: rotate 1s ease-out;
}

@keyframes rotate {
	20%, 80% {
		transform: rotateY(180deg);
	}
	
	100% {
		transform: rotateY(360deg);
	}
}

.word span:nth-child(5).active {
	animation: toplong 1.5s linear;
}

@keyframes toplong {
	10%, 40% {
		transform: translateY(-48vh) scaleY(1);
	}
	
	90% {
		transform: translateY(-48vh) scaleY(4);
	}
}

/* Other styles */
body {
	background-color: black;
	color: #fff;
	display: flex;
	font-family: 'alphabetic', sans-serif;
	justify-content: center;
	align-items: center;
	flex-direction: row;
	height: 100vh;
	margin: 0;
}

.fixed {
	position: fixed;
	top: 40px;
	left: 50%;
	transform: translateX(-50%);
}

footer {
	position: fixed;
	bottom: 0;
	left: 0;
	right: 0;
	text-align: center;
	letter-spacing: 1px;
}

footer i {
	color: red;
}

footer a {
	color: #3C97BF;
	text-decoration: none;
}</script>

<script id="jsbin-source-javascript" type="text/javascript">let spans = document.querySelectorAll('.word span');
spans.forEach((span, idx) => {
	span.addEventListener('click', (e) => {
		e.target.classList.add('active');
	});
	span.addEventListener('animationend', (e) => {
		e.target.classList.remove('active');
	});
	
	// Initial animation
	setTimeout(() => {
		span.classList.add('active');
	}, 750 * (idx+1))
});</script>

jsbin.untitled.css

@import url('https://fonts.googleapis.com/css?family=Anton|Roboto');

.word {
	font-family: 'Anton', sans-serif;
	perspective: 1000px; 
	perspective-origin: 200px 40px;
}

.word span {
	cursor: pointer;
	display: inline-block;
	font-size: 100px;
	user-select: none;
	line-height: .8;
}

.word span:nth-child(1).active {
	animation: balance 1.5s ease-out;
	transform-origin: 0% 100% 0px;
}

@keyframes balance {
	0%, 100% {
		transform: rotate(0deg);
	}
	
	30%, 60% {
		transform: rotate(-45deg);
	}
}

.word span:nth-child(2).active {
	animation: shrinkjump 1s ease-in-out;
	transform-origin: bottom center;
}

@keyframes shrinkjump {
	10%, 35% {
		transform: scale(2, .2) translate(0, 0);
	}
	
	45%, 50% {
		transform: scale(1) translate(0, -150px);
	}
	
	80% {
		transform: scale(1) translate(0, 0);
	}
}

.word span:nth-child(3).active {
	animation: falling 2s ease-out;
	transform-origin: bottom center;
}

@keyframes falling {
	12% {
		transform: rotateX(240deg);
	}
	
	24% {
		transform: rotateX(150deg);
	}
	
	36% {
		transform: rotateX(200deg);
	}
	
	48% {
		transform: rotateX(175deg);
	}
	
	60%, 85% {
		transform: rotateX(180deg);
	}
	
	100% {
		transform: rotateX(0deg);
	}
}

.word span:nth-child(4).active {
	animation: rotate 1s ease-out;
}

@keyframes rotate {
	20%, 80% {
		transform: rotateY(180deg);
	}
	
	100% {
		transform: rotateY(360deg);
	}
}

.word span:nth-child(5).active {
	animation: toplong 1.5s linear;
}

@keyframes toplong {
	10%, 40% {
		transform: translateY(-48vh) scaleY(1);
	}
	
	90% {
		transform: translateY(-48vh) scaleY(4);
	}
}

/* Other styles */
body {
	background-color: black;
	color: #fff;
	display: flex;
	font-family: 'alphabetic', sans-serif;
	justify-content: center;
	align-items: center;
	flex-direction: row;
	height: 100vh;
	margin: 0;
}

.fixed {
	position: fixed;
	top: 40px;
	left: 50%;
	transform: translateX(-50%);
}

footer {
	position: fixed;
	bottom: 0;
	left: 0;
	right: 0;
	text-align: center;
	letter-spacing: 1px;
}

footer i {
	color: red;
}

footer a {
	color: #3C97BF;
	text-decoration: none;
}

jsbin.untitled.js

let spans = document.querySelectorAll('.word span');
spans.forEach((span, idx) => {
	span.addEventListener('click', (e) => {
		e.target.classList.add('active');
	});
	span.addEventListener('animationend', (e) => {
		e.target.classList.remove('active');
	});
	
	// Initial animation
	setTimeout(() => {
		span.classList.add('active');
	}, 750 * (idx+1))
});