body{margin:0;background:#fff;color:#000;font-family:Georgia,"Times New Roman",Times,serif;}
main{max-width:720px;margin:0 auto;padding:36px 18px 72px;}
h1{font-size:28px;margin:0 0 6px;font-weight:700;}
.sub{margin:0 0 14px;}
h2{font-size:16px;margin:28px 0 8px;}
h3{font-size:14px;margin:22px 0 6px;}
p,li{line-height:1.6;}
a{color:#00f;text-decoration:underline;}
pre{background:#f6f6f6;border:1px solid #ddd;padding:10px;overflow:auto;}
code{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;}
hr{border:0;border-top:1px solid #ddd;margin:18px 0;}
.small{font-size:12px;}
.nav{margin:10px 0 0;}
.nav a{margin-right:10px;}
blockquote{margin:12px 0;padding:0 12px;border-left:3px solid #ddd;}
.toc{margin:12px 0 0;padding:10px 12px;border:1px solid #ddd;background:#fafafa;}
.toc ul{margin:8px 0 0;padding-left:18px;}