<h1>Hop Over Notification Badge</h1>
	<ul class="menu">
		<li><a href="#" data-bubble="117">Messages</a></li>
		<li><a href="#" data-bubble="4">New Posts</a></li>
		<li><a href="#" data-bubble="19">Notifications</a></li>
		<li><a class="gold" href="#" data-bubble="1">Hidden Coins</a></li>
	</ul>

<!-- Inspired by the tuts demo 'Menu Notification Badges Using HTML5 Data-Attributes' [https://webdesign.tutsplus.com/tutorials/htmlcss-tutorials/menu-notification-badges-using-html5-data-attributes]. Forks and improvements welcome. -->

*, *:before, *:after {box-sizing:border-box}

html {
	margin:0 auto;
	padding:1em 2em;
	font:normal 100%/1.5 'Helvetica Neue','Segoe UI', Arial, sans-serif;
	color:#eee; 
	background:#485258;
  height:100%
	}

h1 {
	font-size:2em;
	margin-bottom:1em;
}

.menu {
	display:inline-block;
	margin:0 -.5em 1.5em;
	box-shadow:0.12em 0.12em 0 rgba(40,40,40,.2);
	list-style-type:none;
	padding:0;
	margin:0;
	font-size:1em;
	margin-bottom:1.5em;
}

.menu li {
	float:left;
	border-left:0.063em solid #a6c6cd;
	border-right:0.063em solid #6ca1ac;
}

.menu a {
	display:block;
	padding:0 1em;
	line-height:2.5em;
	position:relative;
	font-weight:bold;
	text-decoration:none;
	color:#364652;
	background-color:#86B2BB;
	text-shadow:0 0.063em 0 #a6c6cd;
}

.menu a:hover, .menu a:active, .menu a:focus {
	color:#eee;
	text-shadow:0.063em 0.063em 0 #547177;
}

.menu a[data-bubble]:after {
	content:attr(data-bubble);
	position:absolute;
   top:0;
	right:0.5em;
	height:1.5em;
	line-height:1.5em;
	padding:0 .46em;
	text-align:center;
	text-shadow:0 0.063em 0 rgba(0,0,0,.2);
	background-color:#eee;
	color:#364652;
	box-shadow:0 0.063em 0.063em rgba(0,0,0,.2);
	border-radius:4em;
	z-index:-1;
  -webkit-transform: translateZ(0);/*Prevents text flicker*/
	will-change: transform;
}

a.gold[data-bubble]:after {
	background-color:gold;
}

.menu a:hover[data-bubble]:after, .menu a:active[data-bubble]:after, .menu a:focus[data-bubble]:after {
	-webkit-animation:ease bubbleover .4s;
	animation:ease bubbleover .4s;
  -webkit-animation-fill-mode: both;
	animation-fill-mode: both;
	top:-1.25em; /* If pseudo animation not supported [see https://css-tricks.com/transitions-and-animations-on-css-generated-content/], simple hover fallback happens*/
	z-index:1;
}

@-webkit-keyframes bubbleover {
  0%   {
  	-webkit-transform:translate(0, 1em);
  	z-index:-1
  	}
  50% {
  	-webkit-transform:translate(0, -.5em);
  	z-index:-1
  } 
  100% {
  	-webkit-transform:translate(0, 0);
  	z-index:1;
  	}
}

@keyframes bubbleover {
  0%   {
    top:0;
    transform:translate(0, 0);
    z-index:-1;
    }
  50% {
    transform:translate(0, -12px);
    z-index:-1
    } 
  100% {
    transform:translate(0, 6px);
    z-index:1;
    }
}