.nav {
    height: 92px;
    background-color: #fff;
    box-shadow: 0 1px 10px rgba(0, 0, 0, .08);
}

.nav .logo {
    opacity: 1;
}

/* È«¾Ö */
header {
    background-color: #fff;
    box-shadow: 0 3px 6px rgb(0, 0, 0, .06);
}

.banner,
.title,
body > .content,
.footer-2 {
    width: 100%;
    min-width: 1280px;
    max-width: 1920px;
    margin: 0 auto;
}

/* banner */
.banner {
    padding-top: 92px;
}

.banner img {
    width: 100%;
}

.banner-2 {
    display: none;
}

/* title */
.title {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100vw;
    height: calc(100vw * 424 / 2880);
}

.title img {
    display: block;
    width: auto;
    height: calc(100vw * 162 / 2880);
}

/* content */
body > .content {
    background-color: #1c2a8b;
    overflow: hidden;
}

body > .content .row-box {
    width: 100%;
    overflow: hidden;
}

body > .content .left img,
body > .content .right img {
    width: 100%;
}

body > .content .left {
    float: left;
    width: calc(50% - 3px);;
    height: auto;
}

body > .content .right {
    float: right;
    width: calc(50% - 3px);;
    height: auto;
}

/* ÏìӦʽ */
@media only screen and (max-width: 575.98px) {
    .banner,
    .title,
    body > .content,
    .footer-2 {
        width: 100%;
        min-width: unset;
        max-width: unset;
        margin: 0 auto;
    }

    .banner {
        float: right;
        padding-top: 59px;
        margin-bottom: 15px;
        width: 100%;
        overflow: hidden;
    }

    .banner-1 {
        display: none;
    }

    .banner-2 {
        display: block;
    }
}