html, body {
	padding: 0;
	margin: 0;
	font-family: Helvetica, Arial, sans-serif;
	color: #444;
}

h1, h2, h3, h4, strong, b, .equation {
	color: #222;
}

a img {
	border-width: 0;
}

.centred, .spacer{
	position: relative;
	display: block;
	margin: 1em auto;
	width: 800px;
}

.text_content {
	width: 790px;
	padding-left: 10px;
}

dl {
	margin-left: 40px;
}

dt {
	float: left;
	width: 50px;
	font-weight: bold;
	min-width: 50px;
}

dd {
	margin: 0em;
}

.equation {
	font-weight: bold;
	margin-left: 40px;
	
}

.equation_notes {
	margin-left: 40px;
	font-size: 80%;
}

.spacer {
	height: 3em;	
}

#introduction, #background, #curtain {
	height: 200px;
	background-color: #DDD;
}

#curtain, #introduction {
	text-align: center;
}

#background, #curtain, #instructions {
	display: none;	
}

#message, #intro {
	padding-top: 3em;
	margin-bottom: 1em;
}

body.target_1 #target_1, body.target_2 #target_2 {
	background-color: red;
}

.pane {
	display: inline;
	width: 50%;
	height: 100%;
	overflow: hidden;
}

#left_pane {
	position: relative;
	float: left;
}

#right_pane {
	position: relative;
	float: right;
}

.target {
	position: relative;
	width: 100px;
	height: 190px;
	margin: 0;
	top: 5px;
	background-color: #666;
}

#target_1 {
	position: relative;
	left: 150px;
}

#target_2 {
	position: relative;
	float: right;
	right: 150px;
}

#instructions div {
	margin-bottom: 0.5em;
}

#instructions_text {
	
}

#counter {

}

#stats, #difficulty_text {
	color: #666;
	font-size: 80%;
}