.wrap_bn {
    clear: both;
    margin-bottom: 15px;
    width: 630px;
    float: left;
}
#contents     .wrap_bn h3 {
    margin-top: 5px;
    margin-bottom: 10px;
}
#contents .navi {
    text-align: center;
    padding-bottom: 0px;
    padding-top: 15px;
    border: 2px dotted #CCCCCC;
    clear: both;
    margin-top: 15px;
    margin-bottom: 15px;
}
.wrap_bn .next {
    clear: both;
    margin-top: 15px;
}