.product_video_list{
    margin-top: 110px;
}
.product_video_list .product_video{
    margin-bottom: 50px;
}
.product_video_list .product_video .img{
    height: 400px;
}
.product_video_list .product_video .title{
    font-size: 31px;
    color: #333;
    margin-top: 30px;
    font-weight: bold;
}
.product_video_list .product_video .time{
    font-size: 16px;
    color: #999;
    margin-top: 15px;
}
.product_video_list .product_video .product{
    font-size: 20px;
    color: #666;
    margin-top: 30px;
}
@media (max-width: 1200px) {
    .product_video_list .product_video .title{
        font-size: 20px;
        color: #333;
        margin-top: 20px;
    }
    .product_video_list .product_video .time{
        font-size: 12px;
        color: #3786FF;
        margin-top: 10px;
    }
    .product_video_list .product_video .product{
        font-size: 14px;
        color: #666;
        margin-top: 20px;
    }
}
@media (max-width: 768px) {
    .product_video_list{
        margin-top: 50px;
    }
    .product_video_list .product_video{
        margin-bottom: 30px;
    }
    .product_video_list .product_video .title{
        font-size: 12px;
        color: #333;
        margin-top: 10px;
    }
    .product_video_list .product_video .time{
        font-size: 12px;
        color: #3786FF;
        margin-top: 10px;
    }
    .product_video_list .product_video .product{
        font-size: 12px;
        color: #666;
        margin-top: 10px;
    }
    .product_video_list .product_video .img{
        height: 300px;
    }
}
.caijian{
	width: 100%;
	height: 240px;
	position: relative;
	overflow: hidden;
}
.caijian img{
	width:100%;
	height: 100%;
	object-fit:cover;
}