html {
background: #ddd;
}
body {
background: #ddd;
font: 100%/1.3 Georgia, sans-serif;
}
h1 {
font-size: 180%; 
margin: 6px 3px;
}
h2 {
font-size: 140%; 
margin: 20px 3px 0;
color: #c00;
}
h3 {
font-size: 130%; 
margin: 20px 3px 0;
}
h4 {
font-size: 120%; 
margin: 20px 3px 0;
}
p {
margin: 6px 4px;
clear: both;
max-width: 40em;
}

p.warning {
margin-bottom: 20px;
padding: 5px;
border: solid 1px #999;
background: #ee0;
}