.mainBox {
    padding: 20px 40px;
}

.mainBox .head-title {
    font-size: 24px;
    text-align: center;
    padding: 20px;
}

.mainBox .el-tabs__nav-scroll {
    text-align: center;
}

.mainBox .el-tabs__nav {
    float: unset;
    display: inline-block;
    margin: 0 auto;
}

.mainBox .main-content .tag-list {
    margin: 10px auto 20px;
}

.mainBox .main-content .tag-list .tag {
    display: inline-block;
    min-width: 160px;
    height: 40px;
    line-height: 40px;
    text-align: center;
    border-radius: 10px;
    margin-right: 40px;
    border: 1px solid #ddd;
    cursor: pointer;
    overflow: hidden;
}

.mainBox .main-content .tag-list .tag:hover,
.mainBox .main-content .tag-list .tag.active-tag {
    color: var(--base-color);
    border-color: var(--base-color);
}

.mainBox .main-content .tag-list .tag.active-tag {
    background-color: var(--sub-color);
}

.mainBox .main-content .repository-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    height: 60px;
    cursor: pointer;
    border-bottom: 1px solid rgb(240, 240, 240);
}

.mainBox .main-content .repository-item:hover {
    background-color: var(--sub-color);
}

.mainBox .main-content .repository-item .item-lf .sub {
    color: var(--base-color);
    font-size: 12px;
    padding: 2px 4px;
    border: var(--base-color) solid 1px;
    border-radius: 4px;
    margin-right: 10px;
}

.mainBox .main-content .repository-item .item-rt {
    color: #666;
}

.mainBox .main-content .tutorials-item {
    position: relative;
    float: left;
    width: calc(25% - 20px);
    border-radius: 10px;
    box-shadow: 0 1px 6px rgba(0, 0, 0, .16);
    margin-right: 20px;
    margin-bottom: 20px;
    cursor: pointer;
}

.mainBox .main-content .tutorials-item:hover {
    background-color: var(--sub-color);
}

.mainBox .main-content .tutorials-item .item-video {
    position: relative;
    width: 100%;
}

.mainBox .main-content .tutorials-item .item-video>i {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #999;
    font-size: 36px;
}

.mainBox .main-content .tutorials-item .item-title {
    padding: 10px 10px 20px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.mainBox .main-content .tutorials-item .item-title .sub {
    color: var(--base-color);
    font-size: 12px;
    padding: 2px 4px;
    border: var(--base-color) solid 1px;
    border-radius: 4px;
    margin-right: 10px;
}

/* details */
.details-content {
    line-height: 1.8;
    padding-bottom: 40px;
}

.video-content {
    max-width: 100%;
    width: 750px;
    margin: 0 auto 40px;
}

.other-box .other-title {
    height: 24px;
    color: #666;
    font-size: 18px;
    font-weight: 400;
    padding: 20px 0;
}

.other-box .other-title::before {
    content: "";
    display: inline-block;
    width: 4px;
    height: 24px;
    background: var(--base-color);
    margin-right: 10px;
    vertical-align: text-bottom;
}

.serve-box {
    display: flex;
    justify-content: space-between;
}

.serve-box .serve-rt {
    display: flex;
}

.serve-box .serve-rt>i {
    font-size: 32px;
    margin-left: 10px;
    color: var(--base-color);
}

.help-box {
    padding: 10px;
    border: var(--base-color) solid 1px;
    border-radius: 4px;
    background-color: var(--sub-color);
}

.help-box .help-title {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 10px;
}

.help-box .help-content {
    text-align: center;
}