wrote a general scss file called "main.scss", which is full of some commonly used css, 
. My current way to introduce it is to introduce it actively in each .vue file. 
 is as follows: 
<style lang="sass" scoped>
    @import "../../css/main.scss";
</style> is there any way that can be introduced at one time, such as writing ordinary vue items, writing 
 such as 
<style src="../../styles/main.css" scoped></style> or: 
 where can I import directly? 
