body {
    margin: 0;
    padding: 0;
    background-color: #f0f2f5;
    overflow-x: hidden;
    font-family: Times,"TimesNewRoman",serif !important;
    /* overflow: hidden; */
}

.my-nav {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
}


.nav-left {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
}

.logo {
    width: 100px;
}

.index-content-box {
    width: 65%;
    margin-top: 30px;
    font-size: 1.5rem;
    line-height: 1.6;
}

.section-index-content {
    width: 100vw;
    padding-top: 120px;
    padding-bottom: 120px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.nav-right > li > a {
    font-size: 1.3rem !important;
}

.nav-right > li > dl a {
    font-size: 1.3rem !important;
}




.index-content-box > p {
    text-indent: 2rem;
}

.total-title {
    font-size: 4rem;
    font-weight: 700;
    margin: 10px auto;
}

.video-frame-box {
    width: 100%;
    margin: 30px auto 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
}

.nav-right {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
}

.cover-img {
    width: 100%;
    margin-top: 60px;
}

/* 内容 */
.content-div {
    width: 100%;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
}

.content-part-one {
    margin-top: 50px;
    display: flex;
    flex-direction: column;
    background-color: #fafafa;
    box-shadow: 0 1px 4px 0 rgb(0 21 41 / 12%);

}

.layui-card-header {
    font-family: fantasy;
}

/* .layui-card {
    height: 320px;
} */

.content-part-two {
    margin-top: 50px;
    background-color: #fafafa;
    padding-bottom: 30px;
    box-shadow: 0 1px 4px 0 rgb(0 21 41 / 12%);

}

.part-two-img-div {
    margin-left: 50px;
}


.content-part-three {
    margin-top: 50px;
    background-color: #fafafa;
    box-shadow: 0 1px 4px 0 rgb(0 21 41 / 12%);

}

.layui-text {
    
}

/* 过渡 */
.transition-sentences {
    margin-top: 50px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    height: 140px;
    font-weight: bold;
    color: #2153afee;
    font-size: 20px;
}

/* 视频 */
.video-us-div {
    margin-top: 30px;
    display: flex;
    flex-direction: column;
    align-items: center;
}


/* 底部 */
footer {
    padding-left: 14%;
    padding-right: 14%;
    margin-top: 100px;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    background-color: #fff;
    height: 230px;
    padding-top: 20px;
    color: #000 !important;
}

footer .logos-box {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    margin: 0 auto;
    width: 900px;
    justify-content: space-around;
}

footer .logo-item-img {
    height: 120px;
}

.footer-left {
    height: 100%;
    display: flex;
    flex-direction: column;
    flex-wrap: wrap;
    justify-content: space-between;
}

.footer-item-div {
    margin-bottom: 10px;
    display: flex;
    flex-direction: row;
    align-items: center;
    height: 100px;
    font-size: 17px;
}

.footer-item-div-img {
    width: 100px;
}

.footer-item-div-text {
    margin-left: 20px;
    font-weight: bold;
    text-align: center;
}

.footer-right {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    justify-content: space-between;
    height: 160px;
    font-size: 17px;
    margin-top: -10px;
}