banner {
    width: 100%;
}

banner .content {
    position: relative;
}

banner .content .bannerImg {
    width: 100%;
}

banner .content .content-div {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    /* 字体 */
    text-align: center;
    color: #FFFFFF;
}
banner .content .content-div  .content-text{
    width: 100%;
}

banner .content .content-text .title {
    width: 100%;
    font-size: 50px;
    font-weight: 600;
    margin-top: 30px;
}

banner .content .content-text .desc {
    width: 100%;
    font-size: 32px;
    font-weight: 300;
    margin-top: 20px;
}

banner .content .content-text a {
    display: block;
    margin: 0 auto;
    height: 63px;
    border: 1px solid #FFFFFF;
    border-radius: 31px;

    line-height: 63px;
    font-size: 18px;
    font-weight: 400;
    color: #FFFFFF;
    margin-top: 40px;
}