Using the \0020 character in pseudo elements

tooltip.css

#tooltip {
	position: absolute;
	left: 0px;
	top:0px;
	height: 40px;
	background: #444;
	color:#fff;
	margin-top:-20px;
	z-index:999;
	-webkit-box-sizing: border-box;
	padding: 10px;
	border-radius: 5px;
	text-shadow: 0px 1px 0px #000;
	display: -webkit-box;
	-webkit-box-pack: center;
	-webkit-box-align: center;
	-webkit-box-orient: horizontal;
	border-bottom: 1px solid #000;
	-webkit-user-select:none;
	cursor: default !important;
}

#tooltip:after {
	content:'\0020';
	position: absolute;
	top: 50%;
	left: -16px;
	margin-top: -8px;
	border: 8px solid black;
	border-color: transparent #444 transparent transparent;
}
#tooltip:before {
	content:'\0020';
	position: absolute;
	top: 50%;
	left: -16px;
	margin-top: -7px;
	border: 8px solid black;
	border-color: transparent #000 transparent transparent;
}