There isn’t exactly a correct answer to this question as that
<div> doesn’t actually exist between the posts in the theme.
paging-navigation just means all the style associated with that class will load for that
<div>, and if that works for you then it is correct and feel free to use it.
You can also give that
<div> a class
anil and add this CSS to create the same thing:
flex: 1 1 100%;
Let me know if this makes sense 🙂