body {
    font-family: Arial, Helvetica, sans-serif;
    margin: 0;
    padding: 0;
}

#container {
    width: 1000px;
    margin: 0 auto;
}

#header {
    background-color: #003366;
    color: #ffffff;
    padding: 20px;
}

.tagline {
    font-style: italic;
}

#menu ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    background-color: #eeeeee;
}

#menu ul li {
    display: inline;
    margin-right: 15px;
}

#menu ul li a {
    text-decoration: none;
    font-weight: bold;
}

#content {
    padding: 20px;
}

.placeholder-image {
    width: 400px;
    height: 250px;
    border: 1px solid #000000;
    margin-top: 15px;
}

#footer {
    background-color: #dddddd;
    text-align: center;
    padding: 15px;
}