body {
    background: #232832;
}

.course-title {
    display: flex;
    align-items: flex-end;
    margin-top: 30px;
}

.title-img-name {
    display: flex;
    align-items: center;
}

.title-img-name div {
    font-size: 30px;
    /* font-family: Source Han Sans CN; */
    font-weight: 500;
    line-height: 51px;
    color: #fff;
    margin-left: 12px;
}

.title-courmessage {
    font-size: 20px;
    /* font-family: Source Han Sans CN; */
    font-weight: 400;
    line-height: 34px;
    color: #CCCCCC;
    margin-left: 24px;
    margin-bottom: 5px;
}

.course-direction {
    display: flex;
    margin-left: 56px;
    margin-top: 36px;
    margin-bottom: 22px;
}

.direction-font {
    font-size: 18px;
    /* font-family: Source Han Sans CN; */
    font-weight: 500;
    color: #fff;
    height: 40px;
    width: 80px;
    line-height: 40px;
}

.course-direction-nav {
    display: flex;
    flex-wrap: wrap;
}

.course-direction-nav div {
    margin-left: 10px;
    padding: 8px 16px;
    font-size: 16px;
    /* font-family: Source Han Sans CN; */
    font-weight: 400;
    color: #999;
    border-radius: 8px;
    cursor: pointer;
}

.course-direction-nav div:hover {
    color: #ED6F22;
}

.directionA {
    background-color: #393E46 !important;
    color: #ED6F22 !important;
}

.course-content-list {
    width: 100%;
    /* background-color: #fff; */
    overflow: hidden;
    padding: 30px 0;
}

.home-trial-class {
    display: flex;
    flex-wrap: wrap;
    min-height: 700px;
    align-content: flex-start;
}

.home-trial-class .a:nth-child(4n) {
    margin-right: 0px;
}

.optimization-item .u:nth-child(4n) {
    margin-right: 0px;
}

.optimization-item {
    width: 282px;
    /* margin-right: 18px;
    margin-bottom: 18px; */
    cursor: pointer;
}

.optimization-item-title {
    font-size: 18px;
    /* font-family: Source Han Sans CN; */
    font-weight: 500;
    color: #fff;
    margin: 8px 0 4px;
}

.optimization-item-name {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.optimization-item-name div:nth-child(1) {
    font-size: 16px;
    font-weight: 400;
    color: #999999;
}

.optimization-item-name div:nth-child(2) {
    font-size: 18px;
    /* font-family: Source Han Sans CN; */
    font-weight: bold;
    color: #FF9657;
    height: 30px;
    line-height: 30px;
    padding: 0 13px;
    border-radius: 6px;
}

.optimization_url {
    width: 100%;
    height: 188px;
    object-fit: cover;
    border-radius: 10px;
}

/* 分页 */
.page-item.disabled .page-link {
    background-color: #393E46;
}

.pagination {
    margin-top: 42px;
}

.page-link:focus {
    z-index: 3;
    outline: 0;
    box-shadow: none;
}

.page-link {
    font-size: 14px;
    /* font-family: Source Han Sans CN; */
    font-weight: 500;
    color: #999999;
    background: #393E46;
    border: none;
    border-radius: 4px !important;
    margin: 0 13.5px;
}

.page-link:hover {
    background: #ED6F22;
    color: #fff;
}

.trial-item {
    background: #393E46;
    width: 282px;
    height: 300px !important;
    cursor: pointer;
    border-radius: 12px;
    /* border: 1px solid #E6E6E6; */
    -webkit-border-radius: 12px;
    overflow: hidden;
}

.a {
    border-radius: 12px;
    -webkit-border-radius: 12px;

    margin-right: 24px;
    margin-bottom: 18px;

}

.a:hover {
    -webkit-transform: translateY(-10px);
    -ms-transform: translateY(-10px);
    transform: translateY(-10px);
    box-shadow: 0px 0px 8px rgba(0, 0, 0, 0.3);
    -webkit-transition: all 0.5s ease-out;
    transition: all 0.5s ease-out;
}

.trial-item .home-mf-img {
    width: 100%;
    height: 188px;
    border-radius: 10px;
    position: relative;
}

.trial-item .home-mf-img .course_url {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.trial-item-name {
    width: 100%;
    font-size: 18px;
    /* font-family: Source Han Sans CN; */
    font-weight: 500;
    color: #fff;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.trial-item-batch {
    font-size: 16px;
    /* font-family: Source Han Sans CN; */
    font-weight: 400;
    color: #999999;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    width: 100%;
    margin-bottom: 10px;
}

.trial-item-teacher {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.trial-item-teacher div:nth-child(1) {
    font-size: 18px;
    /* font-family: Source Han Sans CN; */
    font-weight: bold;
    color: #ED6F22;
}

.trial-item-teacher div:nth-child(2) {
    font-size: 14px;
    /* font-family: Source Han Sans CN; */
    font-weight: 400;
    color: #999999;
}

.video-icon-live {
    width: 40px;
    height: 40px;
    cursor: pointer;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    top: 42%;
}

.trial-bottom {
    width: 100%;
    box-sizing: border-box;
    height: 116px;
    padding: 1px 12px 12px;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    justify-content: space-around;
}

.trialtag {
    width: 80px;
    height: 30px;
    position: absolute;
    left: 0px;
    top: 0px;
}

.trialtime {
    position: absolute;
    right: 5px;
    bottom: 5px;
    height: 26px;
    background: rgba(0, 0, 0, 0.5);
    opacity: 1;
    border-radius: 6px;
    line-height: 26px;
    padding: 0 5px;
    font-size: 14px;
    /* font-family: Source Han Sans CN; */
    color: #FFFFFF;
}

.seek-course {
    height: 76px;
    line-height: 76px;
    font: sans-serif;
    font-size: 16px;
    /* font-family: Source Han Sans CN; */
    font-weight: 500;
    color: #999999;
    width: 1200px;
    margin: 0 auto;
}

.seek-course span {
    color: #ED6F22;
    font-weight: 700;
}

.u {
    margin-right: 18px;
    margin-bottom: 18px;
    height: 255px;
}

.u:hover {
    -webkit-transform: translateY(-10px);
    -ms-transform: translateY(-10px);
    transform: translateY(-10px);
    -webkit-transition: all 0.5s ease-out;
    transition: all 0.5s ease-out;
}

.u:hover .optimization-item-title {
    color: #ED6F22;
}

/* 头像下拉框 */
.dropdownMenu1-li {
    position: absolute;
    bottom: -170px;
    left: -70px;
}

.dropdownMenu1-li li .box {
    width: 107px;
    height: 36px;
}

.dropdownMenu1-li li .box2 {
    width: 107px;
    height: 36px;
}

.dropdownMenu1-li li .box3 {
    width: 107px;
    height: 36px;
}