body {
    font-family: Arial, Helvetica, sans-serif;
    color: navy;
    background-color: #f5f5f5;
    line-height: 1.5;
    margin: 30px;
}

h1 {
    color: darkblue;
}

h2 {
    color: teal;
}

.number-list {
    list-style-type: decimal;
}

.roman-list {
    list-style-type: upper-roman;
}

.circle-list {
    list-style-type: circle;
}

.square-list {
    list-style-type: square;
}

dt {
    font-weight: bold;
    color: darkred;
}

dd {
    margin-bottom: 10px;
}