body {
    font-family: Arial, Helvetica, sans-serif;
    background-color: white;
    margin: 1em auto;
    width: 500px;
    padding: 0 2em 1em;
    border: 1px solid black;
    border-radius: 1em;
}
h1 { 
    font-size: 150%;
}
h2 {
    font-size: 120%;
    padding: 0 0 0 1.5em;
    cursor: pointer;
    background: url(images/plus.png) no-repeat left center;
}
h2.minus {
    background: url(images/minus.png) no-repeat left center;
}
a {
    color: black; 
    text-decoration: none; 
}
a:focus, a:hover {
    color: blue;
}
div {
    display: none;
}
div.open {
    display: block;
}
li {
    padding-bottom: .25em;
}
p {
    padding-bottom: .25em;
    padding-left: 2em;
}