.header {
    width: 100%;
    margin: 0 auto;
    padding: 0px;
    overflow: hidden;
    background-color: rgb(229, 240, 246);
}
.banner {
    width: 1300px;
    margin: 0 auto;
    padding: 0px;
    overflow: hidden;
}
.left_line_bg {
    background-position: right 50%;
    background-image: url("/content/imgs/left_line_bg.gif");
    background-repeat: repeat-y;
}