.top-bg {
    width: 100%;
    margin: 0 auto;
    height: 400px;
    background: url("../images/about.png");
    background-position: center;
    background-repeat: no-repeat;
}

.bottom-bg {
    width: 100%;
    margin: 0 auto;
    height: 780px;
    background: url("../images/linian.png");
    background-position: center;
    background-repeat: no-repeat;
}

.title {
    width: 100%;
    height: 180px;
    line-height: 286px;
    font-size: 46px;
    font-family: PingFang SC;
    font-weight: bold;
    color: #333333;
    background: url("../images/title_bg.png");
    background-repeat: no-repeat;
    text-align: center;
    background-position: bottom center;
    background-size: 434px 32px;
}

.content {
    width: 1200px;
    height: 284px;
    margin: 98px auto 83px;
    display: flex;
    justify-content: space-between;
    align-items: center;

}

.content-img {
    width: 514px;
    height: 284px;
}

.content-txt {
    width: 600px;
    height: 214px;
    font-size: 22px;
    font-family: Microsoft YaHei;
    font-weight: 400;
    color: #888888;
    line-height: 48px;
}