body {
    font-family: Arial, sans-serif;
    background-color: #f2f2f2;
    color: #333;
    margin: 0;
    padding: 0;
    line-height: 1.6;
}

h1 {
    text-align: center;
}

#menu {
    float: left;
    width: 20%;
    background: #ddd;
    padding: 20px;
    margin-top: 20px;
}

#menu a {
    display: block;
    margin-bottom: 10px;
    color: #333;
    text-decoration: none;
}

#menu a:hover {
    color: #000;
    font-weight: bold;
}

div {
    margin-left: 25%;
    padding: 20px;
    background: #fff;
}

a {
    color: #0077cc;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}