How to properly format such code in bootstrap 3?

Question

css

Hello.
Question
: Why write something like this:

<div class="container">
 <div class="row">
  <div class="col-sm-12">
   <p>Hello world</p>
  </div>
 </div>
</div>

If I don't use .col- inside the container, would n't it make more sense
to write it like this:

<div class="container">
   <p>Hello world</p>
</div>

The result is the same, just less code.

Answer 1

Yes you are right.
So it will be more logical, and at the same time correct!
On the off site of the bootstrap, it is decorated in the same way.