#banner {
    margin: -80px 0 0 0;
    height: 632px;
    background: url("./images/about-banner.png") center;
}

/* introduce */
#introduce {
    padding: 0 200px;
    overflow: hidden;
    position: relative;
    z-index: 1;
}

#introduce > h2 {
    font-size: 34px;
    color: #2b333e;
    text-align: center;
    margin: 40px 0 10px;
}

#introduce > p {
    text-align: center;
    margin: 0 0 40px;
}

#introduce > img {
    width: 100%;
    height: auto;
}

#introduce > p > small {
    font-size: 14px;
    color: #b6c1cd;
}

#intro-left-right {
    display: flex;
    flex-flow: row nowrap;
    align-items: flex-start;
    justify-content: space-between;
}

#left-intro {
    flex: 0 0 40%;
}

#left-intro > h3 {
    margin: 50px 0 10px;
    font-size: 20px;
}

#left-intro > p {
    margin: 0;
}

#left-intro > p > small {
    font-size: 14px;
    color: #b6c1cd;
}

#right-intro {
    flex: 0 0 60%;
}

#right-intro > p {
    font-size: 16px;
    color: rgb(121, 132, 145);
    margin: 50px 0;
    line-height: 30px;
}

#right-intro > hr {
    height: 0;
    border-top: 1px solid rgb(243, 246, 247);
    margin: 0;
}

/* contact */
#contact {
    margin: 100px 0 0;
    padding: 0 200px;
    position: relative;
    z-index: 1;
}

#contact > img {
    width: 100%;
    height: auto;
}

#contact-title-cover {
    z-index: 2;
    position: absolute;
    background-color: rgba(0, 0, 0, .5);
    color: white;
    top: -40px;
    left: 250px;
    right: 250px;
    margin: auto;
    padding: 14px 0;
    text-align: center;
}

#contact-title-cover > h2 {
    font-size: 34px;
    margin: 0 0 5px;
}

#contact-title-cover > p {
    margin: 0;
}

#co-detail {
    display: flex;
    flex-flow: row nowrap;
    justify-content: space-between;
    margin: 60px 0;
}

#co-name > h3 {
    font-size: 20px;
    margin: 0 0 20px;
}

#co-name > p, #co-access {
    color: #788493;
    font-size: 16px;
}