.modify-chapter-dialog .icon-uploader .el-upload{border:1px dashed #d9d9d9;border-radius:6px;cursor:pointer;position:relative;overflow:hidden;width:180px;height:180px}.modify-chapter-dialog .icon-uploader .el-upload:hover{border-color:#409eff}.modify-chapter-dialog .icon-uploader .icon-preview{width:180px;height:180px;background-color:#eee;display:block}.modify-chapter-dialog .icon-uploader .image-uploader-icon{font-size:28px;color:#8c939d;width:178px;height:178px;line-height:178px;text-align:center}.modify-chapter-dialog .dialog-custom-class{width:80%}.gu-mirror .el-button{display:none}#course-list .el-pagination{text-align:center;margin:20px auto}