document.css

html{
	background: #efefef;
}
body{
	max-width: 800px;
	margin:0 auto;
}
head{
	display: block;
	text-align: center;
	padding:60px 0;

}
title{
	display: block;
	font-weight:bold;
	font-size:2.5em;

}
meta[name="discription"]{
	display: block;
	padding:.5em 0;
	color:#999;
}
meta[name="discription"]:after{
	content: attr(content);
}
textarea{
	display: block;
	border:0;
	width:calc( 100% - 28px );
	max-width:calc( 100% - 28px );
	min-width:calc( 100% - 28px );
	min-height:200px;
	padding:10px 14px;
	box-shadow:0 0 0 2px #999 inset;

}
.nbnhhsh-box-doc{
	padding:20px 0;
}
.nbnhhsh-box-doc .nbnhhsh-tag-item:nth-child(even){
	background:rgba(255,255,255,.5);
}
.content-box{
	padding:20px 10px 400px;
}
.content-box h2{
	padding:1.5em 0 .5em;
}
.content-box p{
	padding:.4em 0;
}
.content-box code{
	display: inline-block;
	margin:0 0.3em;
	background:rgba(0,0,0,.1);
	padding:.1em .3em;
	border-radius:.2em;
}
.content-box blockquote{
	margin:1em 0;
	padding: .6em 1.2em;
	color:#666;
	background:rgba(0,0,0,.05);
}

pre{
	background:#222;
	color:#FFF;
	padding:4px 8px;
	line-height: 1.2;
	overflow: auto;
}