一、安装插件：

"postcss-px2rem": "^0.3.0",
"postcss-px2rem-exclude": "0.0.6",

二、新建postcss.config.js

module.exports = {plugins: {autoprefixer: {},"postcss-px2rem-exclude": {"remUnit": 192,  //尺寸1920"exclude": /test/i  //不转rem的文件}}
}

三、新建px2rem.js 在 main.js 引入

// rem等比适配配置文件
const baseSize = 16;function setRem() {const scale = document.documentElement.clientWidth / 1920;document.documentElement.style.fontSize =baseSize * Math.min(scale, 2) + "px";
}setRem();window.onresize = function () {const w = document.documentElement.clientWidth || document.body.clientWidthif(w>1300){setRem();}
};