body {
    font-family: 'arial';
}
.navigation {
    border:4px solid #ddd;
    padding:10px;
    margin:10px;
}
#content {
    padding:10px;
    margin:10px;
}
table {
    border-collapse:collapse;
}
table td {
    border: 1px solid #888;
    background-color:  #fff;
    padding:8px;
}
table th {
    border: 1px solid #888;
    background-color:  #88a;
    padding:8px;
}

a {
    text-decoration:none;
    color: #066;
}

a:visited {
    color: #066;
}

td.child-node{
    padding-left: 30px;
}

.bordered-el{
    border:1px solid #888;
    margin:10px;
    padding:10px;
}