body{
margin:0 auto;
max-width:50em;
font:16px/1.5 'Roboto', 'Segoe', 'Segoe UI', 'Arial', sans-serif;
padding:0 1em}


h1,h2,h3,h4{line-height:1.2}

kbd,pre{
border: #888 solid 1px;
border-radius: 6px;
padding: 0.2em 0.4em;
overflow-x: scroll}

#title{
text-align: center;
margin-bottom: 1em}

@media print{body{max-width:none}}