.content-div p.center,
.photo-div {
    text-align: center
}

.content-div p {
    line-height: 36px;
    text-indent: 2rem;
    margin-bottom: 30px
}

.content-div p.title {
    font-size: 24px;
    font-weight: 700
}

.content-div p b {
    color: #05f;
    font-weight: 700
}

.photo-div {
    width: 100%;
    margin: 30px 0
}

.photo-div>div {
    display: inline-block;
    width: 300px;
    height: 170px;
    overflow: hidden;
    margin: 0 10px
}

.photo-div>div img {
    height: 100%;
    width: 100%
}

.tabs-wrap {
    background: #0044c1
}

.tabs-wrap .tabs {
    width: 1000px;
    margin: 0 auto;
    white-space: nowrap;
    display: flex;
    justify-content: center
}

.tabs-wrap .tabs .tab-item {
    display: inline-block;
    padding: 20px 30px;
    position: relative;
    cursor: pointer;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    color: #edffe9;
    text-align: center;
    width: 25%
}

.tabs-wrap .tabs .tab-item::after {
    content: "";
    display: inline-block;
    height: 4px;
    position: absolute;
    width: 40px;
    background-color: rgba(255, 255, 255, 0);
    bottom: 0;
    left: 42%;
    border-radius: 2px
}

.tabs-wrap .tabs .tab-item:hover, .tabs-wrap .tabs .tab-item.active {
    color: #fff;
    font-weight: bold
}

.tabs-wrap .tabs .tab-item:hover::after, .tabs-wrap .tabs .tab-item.active::after {
    background-color: #fff
}

.page2-box {
    width: 1000px;
    margin: 0 auto;
    text-align: center;
    padding-bottom: 170px;
}

.page2-box img{
    display: inline-block;
}

.page2-box > .page2-image {
    width: 1000px;
}

.intro2 {
    margin: 0 auto
}

.intro2 #page2 {
    padding-top: 60px
}

.intro2 #page2 > .video-box {
    display: flex;
    width: 1000px;
    margin: auto;
}

.intro2 #page2 > .video-box > .video-box-right {
    display: flex;
    flex-direction: column;
    justify-content: space-between
}

#player-con2 {
    margin-right: 20px;
}