.body-main {
    display: flex;
    flex-direction: column;
    min-height: 100%;
}

.body-container {
    flex: 1;
    padding-top: 0;
}

.details-header {
    flex-shrink: 0;
    width: 100%;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    top: 0;
    z-index: 999;
    padding: 0 20px;
    position: sticky;
    background: #FFFFFF;
}

.details-header .column-icon {
    width: 40px;
    height: 40px;
    position: absolute;
    left: 5px;
    cursor: pointer;
}

.details-header .header-title {
    margin: 0 auto;
    font-size: 20px;
    font-weight: bold;
    color: #000;
    font-family: BWHaasGrotesk-75Bold-Web, Helvetica, Arial, sans-serif;
}

.details-header .search-icon {
    width: 28px;
    height: 28px;
    position: absolute;
    right: 5px;
    cursor: pointer;
}

.brochures-img {
    width: 100%;
    cursor: pointer;
}

.brochures-box {
    padding: 20px;
}

.brochures-box .name,
.brochures-box .introduction-title {
    font-size: 16px;
    font-weight: bold;
    margin-bottom: 10px;
}

.brochures-box .classify-name {
    margin-bottom: 30px;
    color: rgba(0, 0, 0, 0.5);
    font-size: 14px;
}

.brochures-box .introduction {
    font-size: 14px;
    color: rgba(0, 0, 0, 0.85);
    margin-bottom: 30px;
}

.video-js .vjs-big-play-button {
    background-color: rgba(0, 0, 0, .3);
    border: none;
    margin-top: -33px;
    margin-left: -33px;
    font-size: 42px;
    line-height: 64px;
    height: 66px;
    width: 66px;
    border-radius: 50%;
}

.contact-us-box {
    position: sticky;
    left: calc(100% - 50px);
    bottom: 40px;
    width: 30px;
    height: 30px;
    background: #FFFFFF;
    border-radius: 50%;
    cursor: pointer;
}

.contact-us-box img {
    width: 100%;
    height: 100%;
}