.clearfix:after {
	display: block;
	content: "";
	clear: both;
}
.hide {
	display: none !important;
}
.show {
	display: block !important;
}
.color-master {
	color: rgb(255,191,0);
}
.color-admin {
	color: rgb(255,63,0);
}
.color-member {
	color: rgb(255,127,0);
}
.color-user {
	color: black;
}
.catalogue:before, .article:before, .article-s:before, .user:before, .email:before, .weather:before, .calendar:before, .visitor:before {
	content: "";
	display: inline-block;
	height: 12px;
	width: 12px;
	margin-right: 0.25em;
}
.article-s:before {
	height: 10px;
	width: 10px;
}
.catalogue:before {
	background: url(/static/pic/catalogue.png);
}
.article:before {
	background: url(/static/pic/article.png);
}
.article-s:before {
	background: url(/static/pic/article-s.png);
}
.user:before {
	background: url(/static/pic/user.png);
}
.email:before {
	background: url(/static/pic/email.png);
}
.weather:before {
	background: url(/static/pic/weather.png);
}
.calendar:before {
	background: url(/static/pic/calendar.png);
}
.visitor:before {
	background: url(/static/pic/visitor.png);
}
html {
	font-size: 16px;
}
body {
	margin: 0 2.5%;
}
header {
	margin-bottom: 2rem;
	border-bottom: 2px solid #ccc;
	font-weight: bold;
}
header>nav ul {
	height: 1.5em;
	line-height: 1.5em;
	margin: 1em 0;
	padding: 0;
	list-style: none;
}
#homepage {
	float: left;
}
#otherpage {
	float: right;
}
#otherpage>li {
	float: left;
	margin-left: 1em; 
}
@media screen and (max-width: 480px) {
	#otherpage li {
		margin-left: 0.75em; 
	}
}
header>nav>ul>li>a {
	color: black;
	text-decoration: none;
}
header>nav>ul>li>a:hover {
	border-bottom: 2px solid black;
}
section {
	font-size: 14px;
}
section h1 {
	font-size: 1.375em;
}
section h2 {
	font-size: 1.25em;
}
section h3 {
	font-size: 1.125em;
}
section h1, section h2, section h3, section h4, section h5 {
	font-weight: normal;
	margin: 1em 0;
	padding: 0;
}
footer {
	margin-top: 2rem;
	border-top: 2px solid #ccc;
	text-align: center;
	font-size: 12px;
	color: #888;
}
.footer-bottom {
	position: absolute;
	width: 95%;
	bottom: 0;
}
#back-to-top {
	border: none;
	width: 16px;
	height: 16px;
	background: url("/static/pic/arrow-up.png");
	position: fixed;
	right: 2.5%;
	bottom: 19px;
	text-indent: -9999px;
	cursor: pointer;
	opacity: 0.75;
	display: none;
}
#back-to-top:hover {
	opacity: 1;
}
footer p {
	height: 1.5em;
	line-height: 1.5em;
	margin: 0.5em 0;
}
@media screen and (max-width: 480px) {
	#back-to-top {
		width: 24px;
		height: 24px;
		background: url("/static/pic/arrow-up-mo.png");
		bottom: 15px;
	}
}