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<span class="back">
<span>z</span>
<span>h</span>
<span>u</span>
<span>z</span>
<span>h</span>
<span>u</span>
<span>y</span>
<span>u</span>
<span>l</span>
<span>e</span>
</span>
@import url(https://fonts.googleapis.com/css?family=Roboto:300);
  	html {
    	height:90%;
	}

	body {
		 background:#3F485B;
     display:flex;
     align-items:center;
     height:90%;
	}
	.back {
		margin:1em auto;
		font-family:"Roboto";
	}
	.back span {
		font-size:3em;
		color:#F2C640;
		background:#262B37;
		display:table-cell;
		box-shadow:inset 0 0 5px rgba(0,0,0,0.3), 0 5px 0 #ccc;
		padding: 0 15px;
		line-height: 100px;
		animation:jumb 2s infinite;
	}
	@keyframes jumb {
		0% {
			transform:translateY(0px)
		}
		50% {
			transform:translateY(-30px);
			box-shadow:0 15px 0 rgb(242, 198, 64);
		}
		100% {
			transform:translateY(0px)	
		}
	}
	.back span:nth-child(1) {
		animation-delay:0s;
	}
	.back span:nth-child(2) {
		animation-delay:.1s;	
	}
	.back span:nth-child(3) {
		animation-delay:.2s;
	}
	.back span:nth-child(4) {
		animation-delay:.3s;	
	}
	.back span:nth-child(5) {
		animation-delay:.4s;
	}
	.back span:nth-child(6) {
		animation-delay:.5s;	
	}
	.back span:nth-child(7) {
		animation-delay:.6s;
	}
	.back span:nth-child(8) {
		animation-delay:.7s;
	}
	.back span:nth-child(9) {
		animation-delay:.8s;
	}
	.back span:nth-child(10) {
		animation-delay:.9s;
	}