Are bootstrap flexbox classes needed in html?

Question

Bootstrap

Does it make sense to use bootstrap classes for flex, does it give any speed advantage or is it better to write it in your style file?
I mean posts like this

<div class="works-item__inner d-flex flex-column justify-content-between">

Answer 1

If you're using the Bootstrap framework, it might make sense to be consistent and consistent throughout your code.
At a minimum, stick to one chosen method.
Well, it will certainly not be worse to use the functionality of the framework where possible, and not where you want, since you have chosen to use the framework.
Here we are not talking about speed, but about the convenience of maintaining code for other developers or even for yourself.