.page_main {
    padding-top: 80px;
    padding-bottom: 140px;
}
.page_main_left {
    padding-left:340px;
    float:left
}
.page_main_right {
    float:left;
    margin-left:48px;
}
.page_not_found_title {
    font-size: 24px;
    line-height:33px;
    color:#000;
    margin-top:66px;
}
.page_not_found_des {
    font-size: 14px;
    line-height: 20px;
    color: #666;
    margin-top:16px;
}
.page_not_found_return {
    color: #1686CC;
}