.join-banner {
    position: relative;
}

.join-banner i {
    display: block;
}

.join-banner i img {
    width: 100%;
}

.join-title {
    position: absolute;
    z-index: 10;
    left: 0;
    top: 1.2rem;
    width: 100%;
    font-size: 16px;
    color: #fff;
    text-align: center;
}

.join {
    padding: 10px;
}

.join-main {
    display: block;
}

.join-nav {
    width: 100%;
}

.join-nav ul {
    display: flex;
    flex-wrap: wrap;
    padding: 0;
}

.join-nav ul li {
    width: 33.3%;
    padding: 2px;
}

.join-nav ul a {
    display: block;
    padding:0 2px;
    font: 400 16px/36px '微软雅黑';
    color: #000;
    background: #f4f4f4;
}

.join-nav ul a span {
    display: block;
    padding-left: 10px;
    background: url(../images/join_circle.png) no-repeat 2px center,
        url(../images/arrow_right_b.png) no-repeat right center;
}

.join-name {
    padding: 10px 0;
    font: 400 18px/30px '微软雅黑';
    color: #000;
    border-bottom: 1px solid #eaeaea;
}

.join-p {
    padding: 15px 0;
    font-size: 14px;
    line-height: 1.5;
    color: #666666;
}

@media (min-width: 1200px) {
    .join-banner {
        position: relative;
    }

    .join-banner i {
        display: block;
    }

    .join-banner i img {
        width: 100%;
    }

    .join-title {
        position: absolute;
        z-index: 10;
        left: 0;
        top: 12.865vw;
        width: 100%;
        font-size: 3.75vw;
        color: #fff;
        text-align: center;
    }

    .join {
        padding: 2.8vw 8.33vw 5vw;
    }

    .join-main {
        display: flex;
        justify-content: space-between;
    }

    .join-nav {
        width: 17.1875vw;
    }

    .join-nav ul {
        display: block;
        padding: 0;
    }

    .join-nav ul li {
        width: auto;
        padding: 0 0 0.8vw;
    }

    .join-nav ul a {
        display: block;
        padding: 0 40px 0 20px;
        font: 400 18px/48px '微软雅黑';
        color: #000;
        background: #f4f4f4;
    }

    .join-nav ul a span {
        display: block;
        padding-left: 45px;
        background: url(../images/join_circle.png) no-repeat 0 center,
            url(../images/arrow_right_b.png) no-repeat right center;
    }

    .join-nav ul a:hover {
        color: #fff;
        background: #007440;
    }

    .join-nav ul a:hover span {
        background: url(../images/join_circle_w.png) no-repeat 0 center,
            url(../images/arrow_right_w.png) no-repeat right center;
    }

    .join-box {
        width: 62.5vw;
    }

    .join-name {
        padding: 30px 0 45px;
        font: 400 30px/36px '微软雅黑';
        color: #000;
        border-bottom: 2px solid #eaeaea;
    }

    .join-p {
        padding: 35px 0;
        font-size: 0.833vw;
        line-height: 1.5;
        color: #666666;
    }

}