.pre-img{width:320px;height:140px;background:#f8f8f8;border:1px solid #eee;border-radius:5px}.crop-demo-btn{position:relative;width:100px;height:40px;line-height:40px;padding:0 20px;background-color:#409eff;color:#fff;font-size:14px;border-radius:4px;box-sizing:border-box}.el-image{cursor:pointer}