vue公共样式代码存放在/src/styles文件夹里

index里引入其他组件公共样式，index.scss文件内容如下：

@import './sidebar.scss';
@import './searchForm.scss';

body {
  height: 100%;
  -moz-osx-font-smoothing: grayscale;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-family: Helvetica Neue, Helvetica, PingFang SC, Hiragino Sans GB, Microsoft YaHei, Arial, sans-serif;
  margin: 0;
}
body ::-webkit-scrollbar {
  width: 9px;
  height: 13px;
  left: 8px;
  overflow: auto;
}
body ::-webkit-scrollbar-thumb {
  border-radius: 10px;
  background-color: #b6b6b6;
}

在main.js中引入index

import '@/styles/index.scss';