在运行vue程序时，提示content报错的解决办法 already has a 'content' property, give up to overwrite it。搜索了好长时间，终于找到了解决办法，亲测有效，可以试下
配置postcssrc.js的postcss-viewport-units
'postcss-viewport-units': {
filterRule: rule => rule.selector.includes('::after') && rule.selector.includes('::before') && rule.selector.includes(':after') && rule.selector.includes(':before')
}
or
'postcss-viewport-units': {
filterRule: rule => rule.nodes.findIndex(i => i.prop === "content") === -1
}
