.mt-40p{margin-top:40px}.video-txt{font-size:16px;color:#333;text-align:center}.preview{max-width:100%}.operation-btn{display:inline-block}.ant-carousel .slick-slide{text-align:center;height:300px;line-height:300px;background:hsla(0,0%,85.1%,.5);overflow:hidden;position:relative}.ant-carousel .slick-slide .img{position:absolute;top:0;right:0;bottom:0;left:0;background-size:contain;background-repeat:no-repeat;background-position:50%}.ant-carousel .custom-slick-arrow{width:25px;height:25px;font-size:25px;color:#000;opacity:.3}.ant-carousel .custom-slick-arrow:before{display:none}.ant-carousel .custom-slick-arrow:hover{color:#000;opacity:.5}.ant-carousel .slick-slide img{width:100%}.mr-10{margin-right:10px}.flex-end{display:-webkit-box;display:-ms-flexbox;display:flex;-webkit-box-align:center;-ms-flex-align:center;align-items:center;-webkit-box-pack:end;-ms-flex-pack:end;justify-content:flex-end}