style.css

/* Reset */
html,body,div,span,applet,object,iframe,h1,h2,h3,h4,h5,h6,p,blockquote,pre,a,abbr,acronym,address,big,cite,code,del,dfn,em,img,ins,kbd,q,s,samp,small,strike,strong,sub,sup,tt,var,b,u,i,center,dl,dt,dd,ol,ul,li,fieldset,form,label,legend,table,caption,tbody,tfoot,thead,tr,th,td,article,aside,canvas,details,embed,figure,figcaption,footer,header,hgroup,menu,nav,output,ruby,section,summary,time,mark,audio,video{margin:0;padding:0;border:0;font-size:100%;font:inherit;vertical-align:baseline}body{line-height:1}ol,ul{list-style:none}table{border-collapse:collapse;border-spacing:0}caption,th,td{text-align:left;font-weight:normal;vertical-align:middle}q,blockquote{quotes:none}q:before,q:after,blockquote:before,blockquote:after{content:"";content:none}a img{border:none}article,aside,details,figcaption,figure,footer,header,hgroup,menu,nav,section,summary{display:block}section,header,footer,nav,article,aside,figure{display:block;width:100%}mark,time,meter,progress{display:inline}

/* General */

html {
-webkit-font-smoothing:antialiased;
}

body,input,textarea {
  color: #222;
  font-family: sans-serif;
  font-size: 17px;
  line-height: 1.5em;
}

a {
  color: #0881b3;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  -moz-transition-property: color;
  -webkit-transition-property: color;
  -o-transition-property: color;
  transition-property: color;
  -moz-transition-duration: 0.2s;
  -webkit-transition-duration: 0.2s;
  -o-transition-duration: 0.2s;
  transition-duration: 0.2s;
}

a:hover {
  border-bottom: 1px solid;
}

p {
  margin:0 0 1em;
}

pre {
  background-color: #f8f8ff;
  border: 1px solid #dedede;
  color: #444;
  font-family: Monaco,Courier,monospace;
  font-size: 13px;
  overflow: auto;
  margin: 0 0 2em;
  padding: 0.5em;
}

pre code {
  background-color: #f8f8ff;
  border: medium none;
  font-size: 1em;
  padding: 0;
}

code {
  background-color: #f8f8ff;
  border: 1px solid #dedede;
  color: #444;
  font-family: Monaco,Courier,monospace;
  font-size: 0.8em;
  padding: 0 0.2em;
}

h1 {
  color: #000;
  font-size: 2.5em;
  font-weight: 700;
  margin-bottom: 0.25em;
}

h2 {
  font-size: 1.5em;
  font-weight: 700;
  margin-bottom: 0.25em;
}

h3 {
  font-size: 1em;
  font-weight: 700;
}

body > header, body > section, body > footer {
  width:640px;
  margin:0 auto;
}

body > header {
  margin:5em auto 4em;
}

span.gray {
  color: #999;
}

span.gray a {
  color: #999;
}

span.gray a:hover {
  color: #0881b3;
}

body > footer {
  width: 640px;
  color: #aaa;
  text-shadow: #fff 0 1px 0;
  font-size: 0.8em;
  text-align: center;
  margin: 3em auto;
}

body > footer a {
  color: #aaa;
}

body > footer a:hover {
  color: #0881b3;
}

.light {
  color: #999;
}

blockquote {
  color: #999;
  border-left: 4px solid #ddd;
  padding-left: 1em;
  margin-bottom: 1em;
}