Shadow-DOM注入样式 轻松修改Shadow DOM CSS的辅助功能。 安装 npm install shadow-dom-inject-styles --save Vanilla JS示例/演示 < script type =" module " > import { injectStyles } from 'https://unpkg.com/shadow-dom-inject-styles@latest/dist/index.js' ; setTimeout ( ( ) => { const toolbar = document . querySelector