.study-class-box .el-dialog__body{border-top:1px solid #f1f1f1;padding-top:16px;padding-left:72px;padding-right:72px;padding-bottom:0}.study-class-box .el-dialog__footer{text-align:center}.study-class-box .el-date-editor .el-range__icon{line-height:24px}.study-class-box .el-date-editor .el-range-separator{line-height:24px;color:#999}.study-class-box .el-date-editor .el-range__close-icon{line-height:24px}