body {
    font-family: Trebuchet MS, Arial, Helvetica;
}

p {
    font-size: 0.9em;
}

header {
    margin: 10px;
}

nav {
    float: left;
    width: 220px;
    padding-left: 15px;
    font-size: 0.9em;
}

nav ul {
    list-style-type: none;
    margin: 0;
    padding: 5px;
    line-height: 1.4em;

}

nav ul li {
    display: block;
    background-color: #f7f7f7;
    margin-bottom: 2px;
    padding: 5px;
}

nav ul ul {
    list-style-type: none;
    margin: 0;
    padding-left: 15px;
}

nav ul li ul li {
    font-size: 0.9em;
}

nav a {
    text-decoration: none;
}

.content {
    float: left;
    margin-left: 3em;
}

footer {
    margin: 10px auto;
    text-align: center;
    padding-top: 5px;
    font-size: 0.8em;
    border-top: 1px solid #000;
}