.container-nav-img li:nth-child(7) {
    background: rgba(0,0,0,0.7);
    border-radius: 20px;
}

.intro-main {
    width: 100%;
    height: auto;
}

.intro-main > div {
    width: 100%;
}

.intro-session1 {
    height: 630px;
    text-align: center;
    background: #fff;
}

.intro-title {
    padding-top: 30px;
    font-size: 32px;
    font-weight: 500;
    color: #333;
    line-height: 45px;
}

.intro-section-content1 {
    text-align: center;
}

.intro-section-content1 > *,
.intro-section-content2 > * {
    display: inline-block;
    vertical-align: middle;
}

.intro-section-content1-title {
    font-size: 24px;
    font-weight: 500;
    color: rgba(0,0,0,0.2);
    line-height: 33px;
    margin: 0 60px;
}

.intro-section-content2 {
    margin-top: 50px;
    text-align: center;
}

.intro-section-content2-right {
    margin-left: 40px;
    width: 570px;
    font-size: 16px;
    font-weight: 400;
    color: #333;
    text-align: left;
}

.intro-section-content2-right p {
    line-height: 31px;
}

.intro-session2 {
    height: 350px;
    text-align: center;
    background: #F6F6F6;
}

.intro-session2 .intro-section-content2-right,
.intro-session3 .intro-section-content2-right {
    margin-left: 0;
    width: 1120px;
}

.intro-session3 {
    height: 800px;
    text-align: center;
    background: #fff;
}

/*culture*/
 .stra-main {
            width: 100%;
            height: auto;
        }

.stra-session1 {
    width: 100%;
    height: 1241px;
    text-align: center;
    background: #fff;
}

.stra-title {
    padding-top: 30px;
    font-size: 32px;
    font-weight: 500;
    color: #333;
    line-height: 45px;
}

.stra-section-content1 {
    text-align: center;
}

    .stra-section-content1 > * {
        display: inline-block;
        vertical-align: middle;
    }

.stra-section-content1-title {
    font-size: 24px;
    font-weight: 500;
    color: rgba(0,0,0,0.2);
    line-height: 33px;
    margin: 0 60px;
}

.stra-section-content2 {
    display: inline-block;
    width: 1100px;
    margin-top: 50px;
    text-align: center;
}

.stra-content2-item {
    display: inline-block;
    margin-bottom: 60px;
}

    .stra-content2-item > * {
        display: inline-block;
        vertical-align: middle;
    }

.stra-content2-item-left {
    text-align: left;
    width: 380px;
}

.stra-content2-item-right {
    text-align: left;
    width: 380px;
}

.item-line {
    width: 3px;
    height: 160px;
    background: #F0F0F0;
    border-radius: 7px;
    margin-left: 138px;
    margin-right: 138px;
}

.item-title {
    font-size: 20px;
    font-weight: 500;
    color: #333;
    line-height: 28px;
    margin-bottom: 10px;
}

.item-text {
    font-size: 16px;
    font-weight: 400;
    color: #333;
    line-height: 30px;
}

.stra-content2-item-left .item-title,
.stra-content2-item-left .item-text {
    margin-left: 55px;
}

.b1 {
    height: 255px;
    background: url(/static/image/about/01.png) no-repeat center left;
}

.b2 {
    height: 245px;
    background: url(/static/image/about/02.png) no-repeat bottom right 30px;
}

.b3 {
    height: 245px;
    background: url(/static/image/about/03.png) no-repeat bottom left;
}

/*development*/
.dev-main {
            width: 100%;
            height: auto;
        }

.dev-session1 {
    width: 100%;
    height: auto;
    text-align: center;
    background: #fff;
}

.dev-title {
    padding-top: 30px;
    font-size: 32px;
    font-weight: 500;
    color: #333;
    line-height: 45px;
}

.dev-section-content1 {
    text-align: center;
}

.dev-section-content1 > * {
    display: inline-block;
    vertical-align: middle;
}

.dev-section-content1-title {
    font-size: 24px;
    font-weight: 500;
    color: rgba(0,0,0,0.2);
    line-height: 33px;
    margin: 0 60px;
}

       
.dev-section-content2 {
    text-align: left;
    padding: 20px 0 100px;
    margin: auto;
    width: 720px;
}

.dev-section-content2 .year {
    margin-top: 60px;
    color: #44B449;
    font-weight: 600;
    font-size: 48px;
    line-height: 67px;
    letter-spacing: 1px;
    -webkit-text-stroke: 2px rgba(68,180,73,1);
    text-stroke: 2px rgba(68,180,73,1);
}

.dev-section-content2 .dev-content2-item {
    margin-top: 20px;
    font-size: 0;
}

.dev-section-content2 .dev-content2-item + .dev-content2-item {
    margin-top: 40px;
}

.dev-section-content2 .dev-content2-item .point {
    margin-left: 93px;
    height: 24px;
    width: 8px;
    border-radius: 5px;
    background: #44B449;
    margin-right: 20px;
    vertical-align: middle;
    display: inline-block;
    text-align: center;
}

.dev-section-content2 .dev-content2-item .line {
    display: inline-block;
    width: 1px;
    background: #44B449;
    border-radius: 5px;
}

.dev-section-content2 .dev-content2-item .content {
    vertical-align: middle;
    color: #222222;
    display: inline-block;
}

.dev-section-content2 .dev-content2-item .content .month {
    font-size: 26px;
    line-height: 37px;
    margin-bottom: 4px;
    font-weight: 600;
}

.dev-section-content2 .dev-content2-item .content .history {
    font-size: 18px;
    line-height: 25px;
    font-weight: 500;
}

/*contact*/
.contact-main {
            width: 100%;
            height: auto;
        }

.contact-session1 {
    width: 100%;
    height: 1000px;
    text-align: center;
    background: #fff;
}

.contact-title {
    padding-top: 30px;
    font-size: 32px;
    font-weight: 500;
    color: #333;
    line-height: 45px;
}

.contact-section-content1 {
    text-align: center;
}

.contact-section-content1 > * {
    display: inline-block;
    vertical-align: middle;
}

.contact-section-content1-title {
    font-size: 24px;
    font-weight: 500;
    color: rgba(0,0,0,0.2);
    line-height: 33px;
    margin: 0 60px;
}

.contact-section-content2 {
    display: inline-block;
    width: 1180px;
    margin-top: 50px;
    text-align: center;
}

.contact-section-content2 > div {
    width: 100%;
}

.contact-content2-top {
    display: inline-block;
    text-align: left;
}

.contact-content2-tl,
.contact-content2-tr {
    display: inline-block;
    vertical-align: middle;
    font-size: 16px;
    font-weight: 400;
    color: rgba(0,0,0,0.85);
    line-height: 48px;
}

.contact-content2-tl p,
.contact-content2-tr p {
    margin-bottom: 15px;
}


.contact-content2-tc {
    display: inline-block;
    vertical-align: middle;
    width: 1px;
    height: 209px;
    background: #F0F0F0;
    border-radius: 1px;
    margin-left: 180px;
    margin-right: 170px;
}


.contact > * {
    display: inline-block;
    vertical-align: top;
}

.contact-content2-bottom {
    position: relative;
    margin-top: 43px;
}

.contact-content2-bottom p {
    position: absolute;
    top: 338px;
    left: 580px;
    font-size: 14px;
    font-weight: bold;
    color: forestgreen;
    line-height: 20px;
}