#content {}

.slider {
    height: 4px;
    background: orangered;
    position: absolute;
    top: 70px;
    left: 535px;
}

#about_bg {
    width: 100%;
    height: 155px;
    background: url(../images/about_bg.png) no-repeat;
    background-size: 100%;
}

#about_nav {
    width: 720px;
    height: 170px;
    margin: 0 auto;
    padding: 10px 210px;
}

#about_nav ul {
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: space-between;
}

#about_nav li {
    width: 24%;
    height: 100%;
    display: inline-block;
}

#about_nav img {
    width: 80px;
    height: 80px;
    border: 0px;
    display: block;
    padding-top: 50%;
    padding-left: 50%;
    margin-left: -40px;
    margin-top: -50px;
}

#about_nav span {
    display: block;
    margin-top: 10px;
    text-align: center;
}

#about_nav a:link {
    color: black;
}

#about_nav a:visited {
    color: black;
}

#about_nav a:hover {
    color: black;
}

#about_nav a:active {
    color: black;
}

.select_bg {
    background: #FF6300;
}

.article_show {
    display: block;
}

.article_hide {
    display: none;
}

.article_wrap {
    width: 100%;
    height: auto;
    background: #EDECED;
}

.article {
    width: 880px;
    padding: 70px 130px;
    margin: 0 auto;
}

.article_wrap p {
    font-size: 14px;
    line-height: 35px;
}

.article h3 {
    margin-top: 30px;
    margin-bottom: 30px;
}

#article_3 h3 {
    margin-bottom: 20px;
}

.address_img {
    border: 10px solid white;
    border-radius: 30px;
    display: inline-block;
}

.address_p {
    width: 380px;
    display: inline-block;
    position: absolute;
    top: 100px;
    right: 100px;
}

#article_2 {
    position: relative;
    width: 1000px;
    padding: 70px 70px;
    margin: 0 auto;
}

.address_detail {
    display: inline-block;
    vertical-align: top;
    margin-left: 15px;
    margin-top: 15px;
}

.address_detail li {
    margin-bottom: 30px;
}

.section-mt {
    margin-top: 30px;
}