head, body {
	font-family: "Source Sans Pro";
	font-size: 14px;
	color: #202020;
}

header {
	margin: 30px auto;
	text-align: center;
}

header h1 {
	margin: 0 0 30px;

	font-weight: 200;
	font-size: 50px;
}

#social {
	margin-top: 20px;
	height: 26px;
}

a {
	color: #457AA8;
	text-decoration: none;
}

a:hover {
	text-decoration: underline;
}

a:active {
	opacity: 0.7;
}

nav a, .button {
	padding: 4px 12px;
	margin: 0 5px;
}

nav a, .challenge, .button {
	font-size: 14px;
	text-decoration: none;
	color: #202020;
	background: #F7F7F7;
	border: 1px solid #EDEDED;
	border-radius: 3px;
	box-shadow: inset 0 1px 0 0 #fff;
	outline: 0;
}

nav a:hover, nav a:focus,
.challenge:hover, .challenge:focus,
.button:hover, .button:focus {
	border-color: #457AA8;
	text-decoration: none;
}

nav a:active, .challenge:active, .button:active {
	opacity: 0.7;
}

section {
	width: 600px;
	margin: 0 auto;
}

section p {
	text-align: justify;
}

section h2 {
	margin: 30px 0 20px;

	font-weight: normal;
	font-size: 22px;
}

section h3 {
	margin: 20px 10px 10px;

	font-weight: normal;
	font-size: 20px;
}

.challenges {
	list-style-type: none;
	padding: 0;
}

.challenge {
	display: block;
	margin-bottom: 20px;
}

.challenge date {
	display: inline-block;
	padding: 10px;
	width: 90px;
	margin-right: 10px;

	text-align: center;
	color: #787878;
	border-right: 1px solid #EDEDED;
}

input:not([type="checkbox"]), dt, dd, textarea, #congratulations {
	padding: 10px;
	margin: 0 8px;
	width: 260px;

	outline: none;
	border-radius: 3px;
	border: 1px solid #CFCFCF;
	font-family: monospace;
}

.single-input input, textarea {
	width: 560px;
}

input:focus, textarea:focus {
	border-color: #457AA8;
}

input.invalid, textarea.invalid {
	border-color: #D14B4B;
}

.hide_passing .passed {
	display: none;
}

h3 {
	margin-left: 8px;
}

h3 #hide_passing {
	font-size: 10pt;
	float: right;
}

dt, dd {
	margin-bottom: 20px;
	white-space: pre-wrap;
}

dt {
	clear: both;
	float: left;
}

dt:before {
	display: inline-block;
	height: 0px;
	float: right;
	content: "»";
	margin-right: -26px;
	margin-top: -4px;
	font-size: 19px;
}

dt.passed, dt.passed + dd {
	border-color: #BAED9D;
	background: #D0F7BA;
}

dt.failed, dt.failed + dd, input.invalid {
	border-color: #F2BEA7;
	background: #FFDAC9;
}

dd {
	margin-left: 309px;
}

dd + dd {
	border-style: dashed;
	display: none;
}

dd.showfail + dd {
	display: block;
}

footer {
	margin: 50px 0 30px;
	text-align: center;
	color: #A3A3A3;
}

#congratulations {
	width: 560px;
	display: none;
}

.hide_passing.all_passing #congratulations {
	display: block;
}