.black-container {
    width: 100%;
    background-color: #1C1F21;
    box-sizing: content-box;
}

.player-center {
    display: flex;
}

.introduction-box {
    padding: 10px 0 10px 0;
    color: #fff;
    font-size: 14px;
    line-height: 1.6;
    min-height: 40px;
    width: 870px;
}

.player-container {
    height: 730px;
    width: 870px;
}

.player-container .course-base-info {
    height: 130px;
    width: 870px;
    display: flex;
    flex-direction: column;
    justify-content: space-evenly;
}

.player-container .course-base-info .title {
    font-size: 24px;
    color: #fff;
    line-height: 24px;
}

.player-container .course-base-info .course-base {
    display: flex;
    color: #fff;
    justify-content: space-between;
    align-items: flex-end;
}

.player-container .course-base-info .course-base .teacher-avatar {
    display: flex;
    color: #fff;
    align-items: flex-end;
}

.player-container .course-base-info .course-base .teacher-avatar img {
    width: 30px;
    height: 30px;
    border-radius: 50%;
}

.player-container .course-base-info .course-base .teacher-avatar .name {
    margin-left: 10px;
}

.player-container .course-base-info .course-base .course-base-info-item {
    display: flex;
    justify-content: space-between;
}

.course-base-info-item .divider {
    width: 20px;
    text-align: center;
}

.player-container .video-box {
    width: 870px;
    height: 600px;
}

.player-container .video-box .video-player {
    height: 550px;
}


.player-container .video-box .video-menu {
    height: 50px;
    background-color: #2B2D2F;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 10px;
}

.player-container .video-box .video-menu .share {
    color: #fff;
    font-size: 16px;
}

.player-container .video-box .video-menu .share i {
    color: #37AC3D;
}

.player-container .video-box .video-menu .collection {
    color: #ffb200;
    font-size: 16px;
}

.course-right-layout {
    width: 330px;
    height: 730px;
}

.course-right-layout .top-box {
    height: 130px;
}

.course-right-layout .main-box {
    height: 600px;
    background-color: #2B2D2F;
}

.course-right-layout .main-box .main-top-box {
    display: flex;
    flex-direction: column;
    box-shadow: 0 6px 9px 0 rgba(0, 0, 0, .5);
    height: 300px;
    position: relative;
}

.course-right-layout .main-box .main-top-box .top-infos {
    display: flex;
    align-items: center;
    padding: 15px 20px 5px 20px;
    height: 110px;
}

.course-right-layout .main-box .main-top-box .top-infos .avatar {
    margin-right: 20px;
    width: 70px;
    height: 70px;
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.course-right-layout .main-box .main-top-box .top-infos .level {
    color: #fff;
    background-color: #fbbd08;
    padding: 0 5px;
    border-radius: 8px;
    font-size: 12px;
    margin-top: 5px;
}

.course-right-layout .main-box .main-top-box .top-infos .avatar img {
    width: 95%;
    height: 95%;
    border-radius: 50%;

}

.course-right-layout .main-box .main-top-box .top-infos .infos {
    display: flex;
    flex-direction: column;
    color: #fff;
    font-size: 16px
}

.course-right-layout .main-box .main-top-box .top-infos .infos .name {
    padding-bottom: 10px;
}

.course-right-layout .main-box .main-top-box .top-infos .infos .user-badge {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    height: 40px;

    width: 180px;
}

.course-right-layout .main-box .main-top-box .top-infos .infos .user-badge a img {
    width: 55px;
    margin: 0 5px 0 0;
}

.course-right-layout .main-box .main-top-box .top-infos .infos .user-more-info {
    font-size: 12px;
}

.course-right-layout .main-box .main-top-box .description-info {
    color: #b6b6b6;
    font-size: 12px;
    padding: 0 20px 20px 20px;
    max-height: 80px;
    overflow: hidden;
    position: absolute;
    top: 130px;
    background-color: #2B2D2F;
    z-index: 9;
    box-sizing: border-box;
}

.course-right-layout .main-box .main-top-box .description-info.more {
    max-height: 475px;
}

.course-right-layout .main-box .main-top-box .description-info .show-more {
    display: none;
    position: absolute;
    bottom: 0;
    right: 1em;
    background: #2B2D2F;
    padding: 0 7px;
    color: #999;
    text-decoration: underline;
    cursor: pointer;
}

.course-right-layout .main-box .main-top-box .description-info .show-more:hover + .description {
    max-height: 500px;
}

.course-right-layout .main-box .main-top-box .description-info:after:hover {
    color: #000;
}

.course-right-layout .main-box .main-top-box .rating-bar {
    padding: 12px 20px;
    color: #fff;
    font-size: 16px;
    text-align: center;
    margin-top: 70px;
}

.course-right-layout .main-box .main-top-box .rating-bar .ui.star.rating.score i.icon {
    font-family: outline-icons;
    color: #ffcc0050;
}

.course-right-layout .main-box .main-top-box .rating-bar .ui.star.rating.score i.icon.selected {
    font-family: Rating;
}

.course-right-layout .main-box .main-top-box .rating-bar .ui.star.rating.score i.icon.active {
    font-family: Rating;
}

.course-right-layout .main-box .main-top-box .buttons {
    display: flex;
    align-items: center;
    justify-content: space-evenly;
    padding: 0px 20px 10px 20px;
}

.rating-text {
    font-size: 14px;
}

.rating-bar .submit-score-btn {
    color: #fff;
    background-color: #4d7198;
    padding: 2px 6px;
    font-size: 12px;
    border-radius: 7px;
}

.course-right-layout .main-box .main-bottom-box {
    height: 220px;
    width: 330px;
    display: inline-block;
    overflow: hidden;
    padding: 0 20px 0 20px;
    font-size: 16px;
    line-height: 2.5;
    color: #41648a;
    overflow-y: auto;
    box-sizing: border-box;
    margin: 30px 0;
}

.course-right-layout .main-box .main-bottom-box .course-list a {
    color: #fff;
    position: relative;
    width: 270px;
    display: inline-block;
    padding-left: 20px;
}

.course-right-layout .main-box .main-bottom-box .course-list .item-name {
    display: inline-block;
    width: 190px;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
}

.course-right-layout .main-box .main-bottom-box .course-list .item-time {
    display: inline-block;
    float: right;
}

.course-right-layout .main-box .main-bottom-box .course-list a.playing-icon {
    color: #41648a;
    pointer-events: none;
    width: 270px;
    display: inline-block;
    padding-left: 20px;

}

.course-right-layout .main-box .main-bottom-box .course-list a.playing-icon:before {
    content: '';
    width: 18px;
    height: 18px;
    background-image: url(https://a.msstatic.com/huya/main/img/header/sprite/living_148032b.png);
    animation: living .6s steps(6) infinite;
    position: absolute;
    top: 11px;
    left: 0;
    background-size: cover;
    background-repeat: no-repeat;
    transform: scale(.7);
}

@keyframes living {
    0% {
        background-position: 0 0
    }

    100% {
        background-position: -108px 0
    }
}

.course-right-layout .main-box .main-bottom-box .course-list:hover a {
    color: #41648a;
}

/*付费通知*/
.paid-video-notice {
    width: 870px;
    height: 550px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #fff;
}

.vipNotice_text {
    line-height: 22px;
    margin-bottom: 20px;
    font-size: 16px;
    color: #fff;
}

.vipNotice_btn {
    display: flex;
    flex-direction: column;
    cursor: pointer;
    width: 220px;
    height: 50px;
    background-image: linear-gradient(139deg, #e9be76 0%, #bf8b44 100%);
    border-radius: 30px;
    margin: 0 auto;
    color: #fff;
    align-items: center;
    justify-content: center;
}

.vipNotice_btn:hover {
    color: #fff;
}

#seeFree {
    position: relative;
    top: 18px;
    cursor: pointer;
}

iframe {
    width: 870px;
    height: 550px;
    border: none;
}

.fake-btn {
    background: rgba(255, 255, 255, .3);
    border-radius: 50%;
    width: 60px;
    height: 70px;
    border: none;
    cursor: pointer;
    outline: none;
}