code {
    font-family: "Courier New", Courier, monospace;
}

div.sourceCode {
    background-color: #ddd;
    padding: 0px 10px 0px; 10px;
}

h1 { border-bottom: 3px solid red; }
h2 { border-bottom: 2px solid red; }
h3 { border-bottom: 1px solid red; }
h4 { border-bottom: 1px solid gray; }