.work-btn{width:60px;height:60px;padding:10px;text-align:center;background:#1890ff;border-radius:50%;color:#fff;position:fixed;right:30px;bottom:100px;cursor:pointer}.certificate-box .img-box{min-height:65vh;display:-webkit-box;display:-ms-flexbox;display:flex;-webkit-box-orient:vertical;-webkit-box-direction:normal;-ms-flex-direction:column;flex-direction:column;-webkit-box-align:center;-ms-flex-align:center;align-items:center;-webkit-box-pack:center;-ms-flex-pack:center;justify-content:center;margin-top:15px}.certificate-box .img-box img{height:66vh;margin-bottom:15px}