body{
	margin: 0;
	padding: 0; 
	background-color: aqua;
}

#container {
	width:600px;
	height: 500px;
	padding: 80px;
	margin: 0 auto;
}

.bar {
	width: 20px;
	height:50px;
	margin: 0 12px;
	float: left;
	
}

.bar:nth-child(1) {
	background-color: darkgoldenrod;
	animation: up 1.3s infinite ease-in-out;
}

.bar:nth-child(2) {
	background-color: red;
	animation: down 0.8s infinite ease-in-out;
	
}

.bar:nth-child(3) {
	background-color: green;
	animation: up 1s infinite ease-in-out;
}

.bar:nth-child(4) {
	background-color: black;
	animation: down 1.1s infinite ease-in-out;
}

.bar:nth-child(5) {
	background-color: violet;
	animation: up 0.9s infinite ease-in-out;
}

@keyframes up {
	0% {transform: translateY(-100px);}
	45%{transform: translateY(100px);}
	72%{transform: translateY(-100px);}
}

@keyframes down {
	0%{transform: translateY(100px);}
	45%{transform: translateY(-100px);}
	72%{transform: translateY(100px);}
}