div {
    /*
        border: 1px solid Black;
    */
}

body {
    margin: 50px auto 0;
    width: 900px;
}

.reference {
    display: none;
    position: relative;
    left: 0;
    top: 0;
    width: 0;
    height: 0;
}

#container {
    width: 900px;
    height: 550px;
}

#navigation {
    float: left;
    width: 243px;
    height: 550px;
}

#content1 {
    float: left;
    width: 650px;
    height: 550px;
}

#page {
    margin-top: 40px;
    margin-left: 10px;
    margin-right: 5px;
    height: 440px;
/*
    border: 1px solid Black;
*/
}

.ss_page1 {
    float: left;
    width: 312px;
    text-align: center;
    height: 340px;
}

.ss_page2 {
    float: left;
    width: 312px;
    text-align: center;
    height: 340px;
}

.ss_page {
    float: left;
    width: 586px;
    text-align: center;
    height: 340px;
}