.zhuanhuan{
    font-size: 1.20rem;
    color: black;
}
.tab{
    position: relative;
}
.tab li{
    width: auto;
}

.zhuanhuan ul li{
    height: 50px;
    text-align: center;
    line-height: 50px;
    cursor: pointer
}
.main{
    display: none;
    animation: moving .5s ease;
}
@keyframes moving {
    from{transform: translateX(10px);opacity: 0;}
    to{transform: translateX(0px);opacity: 1;}
}
.main.active{
    display:flex;
}
.tab .tab-item.active{
    color: rgb(255, 192,0) !important;
}

.sales-thumb{
    margin-top: 50px;
}
.big_box {
            position: relative;
            width: 500px;
            height: 400px;
            margin: 100px auto;
            overflow: hidden;
        }

        .big_box ul {
            position: absolute;
            left: 0;
            width: 600%;
            height: 400px;
        }

        .big_box ul li {
            float: left;
        }

        .big_box ul li img {
            width: 500px;
            height: 400px;
        }

        .left {
            position: absolute;
            top: 50%;
            left: 0;
            transform: translateY(-50%);
            
            width: 30px;
            height: 30px;
            line-height: 30px;
            text-align: center;
            color: white;
            background-color: rgba(0, 0, 0, 0.5);
        }

        .right {
            position: absolute;
            top: 50%;
            right: 0;
            transform: translateY(-50%);
            
            width: 30px;
            height: 30px;
            line-height: 30px;
            text-align: center;
            color: white;
            background-color: rgba(0, 0, 0, 0.5);
        }
        .left,
        .right{
            cursor: pointer;
        }

        .video_box {
            position: fixed;
            top:53%;
            left: 50%;
            transform: translate(-50%,-50%);
            z-index: 98;
            display: none;
        }
        .video_box1{
            width: 1500px;
            height: 700px;
        }
        .video_box>video {
            object-fit: contain;
        }
        .bgc_box {
            position: fixed;
            top: -50px;
            left: 0;
            width: 100vw;
            height: 100vh;
            z-index: 90;
            background-color:rgba(0, 0, 0, .5);
            display: none;
        }