stdproject/frontend/node_modules/element-plus/theme-chalk/el-option-group.css

.el-select-group{margin:0;padding:0}.el-select-group__wrap{list-style:none;margin:0;padding:0;position:relative}.el-select-group__title{box-sizing:border-box;color:var(--el-color-info);font-size:12px;line-height:34px;overflow:hidden;padding:0 20px;text-overflow:ellipsis;white-space:nowrap}.el-select-group .el-select-dropdown__item{padding-left:20px}