.page_bg img {
    width: 100%;
}

.content {
    width: 90%;
    margin: 0 auto;
    letter-spacing: 1px;
}

.about_us_content {
    margin-top: 30px;
    color: #717171;
    line-height: 30px;
    font-size: 14px;
}

.about_us_content img{
    width: 100% !important;
    height: auto !important;
}

.div_art_head {
    margin: 30px 0;
    text-align: center;
    color: #00269a;
}

.div_title {
    font-size: 16px;
    font-weight: bold;
}

.sub_title {
    margin-top: 10px;
    font-size: 12px;
}

.div_hr {
    width: 50%;
}

.div_hr hr {
    background-color: #00269a;
    border: none;
    height: 1px;
    opacity: .8;
}

.div_files {
    font-size: 14px;
    line-height: 20px;
}