* {
    padding: 0; margin: 0;
}
body {
    padding: 30px;
    font-family: Arial, Helvetica, sans-serif;
}
h1 {
    margin-bottom: 1em;
    border-bottom: 1px solid #ccc;
}
h2 {
    margin-bottom: 1em;
    border-bottom: 1px solid #ccc;
}
pre {
    border: 1px dotted #ccc;
    background: #f7f7f7;
    padding: 10px;
    margin-bottom: 1em;
}   
h1 {
    margin-bottom: 0.7em;
}
h2 {
    margin-top: 1em;
}
p {
    margin-bottom: 1em;
}