1.下載lib-flexible

我使用的是vue-cli+webpack，所以是通過npm來安裝的

npm i lib-flexible --save

2.引入lib-flexible

在main.js中引入lib-flexible

import 'lib-flexible/flexible'

3.設定meta標籤

通過meta標籤，設定裝置寬度以及縮放比例

<meta name="viewport" content="width=device-width, initial-scale=1.0">

4.安裝px2rem-loader

npm install px2rem-loader

5.配置px2rem-loader

const cssLoader = {
    loader: 'css-loader',
    options: {
      minimize: process.env.NODE_ENV === 'production',
      sourceMap: options.sourceMap
    }
  }
  const px2remLoader = {
    loader: 'px2rem-loader',
    options: {
      remUnit: 75
    }
  }
 

function generateLoaders (loader, loaderOptions) {
    const loaders = [cssLoader,px2remLoader]
    if (loader) {
      loaders.push({
        loader: loader + '-loader',
        options: Object.assign({}, loaderOptions, {
          sourceMap: options.sourceMap
        })
      })
    }
})
 

6.重啟，一切ok~