mindoc/static/element-ui/lib/theme-default/option-group.css

@charset "UTF-8";.el-select-group{margin:0;padding:0}.el-select-group .el-select-dropdown__item{padding-left:20px}.el-select-group__wrap{list-style:none;margin:0;padding:0}.el-select-group__title{padding-left:10px;font-size:12px;color:#999;height:30px;line-height:30px}