.product-box{margin:0 10%}.product-box .switch{display:flex;justify-content:center;margin:5% 0}.product-box .switch li{cursor:pointer;text-align:center;width:95px;height:45px;line-height:45px;margin-right:10px}.product-box .switch li::after{margin-left:20px;display:inline-block;content:'';width:1px;height:10px;background-color:#000}.product-box .switch li:nth-child(4)::after{background-color:#fff}.product-box .switch .current{background-color:#1F83E3;color:#fff}.product-box .switch .current::after{display:inline;margin-left:0}.switch-box{margin:0 auto;display:none}.switch-box img{width:100%}.switch-box.current{display:block}.switch-box h2{text-align:center;font-size:24px;color:#1F83E3;line-height:36px;font-weight:normal}.switch-box .introduce{margin-bottom:30px}.switch-box .english{margin-bottom:41px;text-align:center;font-size:14px;color:#9A9A9A}.switch-box .test{padding-bottom:100px;font-size:14px;line-height:27px;color:#8e8e8e}.switch-box .test .img{text-align:center;margin:67px 0 90px 0;display:flex;justify-content:center;align-items:center}