*, *:after, *:before { border-box; box-sizing: border-box; }
.clearfix:before, .clearfix:after { content: ''; display: table; }
.clearfix:after { clear: both; }

body {
	background: #f6f9fa;
	color: #536d76;
	font-weight: 400;
	font-size: 1em;
	font-family:微软雅黑;
}

a {
	color: #333;
	text-decoration: none;
	outline: none;
}

a:hover, a:focus {
	color: #333; text-decoration:underline;
}

section {
	padding: 1em;
	text-align: center;
}
.intro{
	width:40%;
	position:relative;
	left:30%;
	padding:10px;}
	
.intro p{
	font-size:100%;}
	

.nav{
	width:35%;
	text-align:right;
	font-size:14px;
	}
.nav a{color:#fff;}
.nav a:hover{ color:#000 text-decoration:underline;}

/* Header */
.codrops-header {
	margin: 50px 0 auto;
	text-align:center;
}

.codrops-header h1 {
	margin: 0;
	font-weight:700;
	font-size: 60px;
	color:#FFF;
}

.codrops-header h1 span {
	display: block;
	padding: 0.5em 0.3em 0.6em 0.1em;
	font-size: 65%;
	font-weight: 300;
	color: #fff;
}
/* To Navigation Style */
.codrops-top {
	width: 100%;
	text-transform: uppercase;
	font-size: 0.69em;
	line-height: 2.2;
}

.codrops-top a {
	display: inline-block;
	padding: 0 1em;
	text-decoration: none;
	letter-spacing: 1px;
}

.codrops-top span.right {
	float: right;
}

.codrops-top span.right a {
	display: block;
	float: left;
}

.codrops-icon:before {
	margin: 0 4px;
	text-transform: none;
	font-weight: normal;
	font-style: normal;
	font-variant: normal;
	font-family: 'codropsicons';
	line-height: 1;
	speak: none;
	-webkit-font-smoothing: antialiased;
}

.codrops-icon-drop:before {
	content: "\e001";
}

.codrops-icon-prev:before {
	content: "\e004";
}

.bf {
	width:634px;
	position:relative;
	left:34%;
	margin-top:35px;
	}
	
.bf p {
	font-size:20px;
	line-height:16px;
	font-weight:bold;}

.bf a{text-decoration:none;color:#333; }
.bf a:hover{color:#900;}
}
@media screen and (max-width: 25em) {

	.codrops-header {
		font-size: 75%;
	}

	.codrops-icon span {
		display: none;
	}

}