v-cloak does not work in vue.js?

Question

There is a div in my page that for show the error message.When I refresh the page,it will appear for a while then it disappear. I added v-cloak but

Answer 1

I fixed this problem by rewrite the css

add a class in css file:

[v-cloak] .v-cloak--hidden{
  display: none;
}

then the html:

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