app.vue
//给style后面加个scoped范围就好了
<style scoped>
h1{
color: purple;
}
</style>
User.vue
<style scoped>
h1{
color: green;
}
</style>
app.vue
//给style后面加个scoped范围就好了
<style scoped>
h1{
color: purple;
}
</style>
User.vue
<style scoped>
h1{
color: green;
}
</style>