* {
    margin: 0;
    padding: 0;
    font-family: "PingFangSC-Regular";
}
a {
    text-decoration: none;
}
.nn-about-banner {
    width: 100%;
    height: 200px;
    background: url(./banner.jpg) no-repeat center;
    background-size: cover;
}
.nn-about-banner h2 {
    max-width: 1200px;
    margin: 0 auto;
    padding-top: 30px;
    font-size: 32px;
    color: #fff;
}
.nn-about-block {
    width: 100%;
    overflow: hidden;
    background-color: #fff;
}
.nn-about-block:nth-child(2n + 1) {
    background-color: #f5f5f6;
}
.nn-about-block-wrap {
    max-width: 1200px;
    margin: 100px auto;
}
.nn-about-block-title {
    line-height: 40px;
    margin-bottom: 30px;
    font-size: 30px;
}
.nn-about-block-content {
    line-height: 28px;
    font-size: 16px;
}
.investors-logo {
    padding: 60px 0 30px;
}
.investors-logo > img {
    height: 40px;
    margin-right: 70px;
}
.contact-us .nn-about-block-wrap {
    display: flex;
    justify-content: space-between;
}
.contact-us .email-address {
    color: #1441dd;
}
.map-container {
    width: 720px;
    height: 460px;
}
.nn-copyright {
    height: 120px;
}
.nn-copyright > p {
    line-height: 80px;
    text-align: center;
    font-size: 12px;
    color: #999;
}
.nn-copyright a {
    color: #999;
}
.nn-national-emblem {
    vertical-align: text-bottom;
}