body {
    font-family: Times, 'Times New Roman', serif;
}

#wrapper {
    width: 1000px;
    margin: auto;
}

#header {
    text-align: right;
    height: 100px;
    width: 100%;
    background-color: green;
}

#mainNav {
    height: 400px;
    width: 30%;
    float: left;
}

#content {
    width: 70%;
    background-image: url("bg.jpg");
    background-repeat: no-repeat;
    float: left;
}
#footer {
    text-align: right;
    height: 50px;
    width: 100%;
    float: left;
}