How to use custom layout in Yii2?

Question

Yii

Hello. I understand that the question is most likely stupid, but it still stands, which means it needs to be solved. I'm starting to learn such a wonderful framework as Yii2. As far as I understood, it has already styled all the HTML with bootstrap. All widgets, etc. But what if I want to completely customize my website layout using Yii2.
Let's say a coder throws off a bunch of pages for me and tells me to raise it all to Yii2. How to do it?
Thanks in advance to all who respond.

Answer 1

The layout is in 'app/frontend/views/layouts/main.php', the styles are in 'app/frontend/web/css/site.css'. And you will also need: Assets
And pages can be added to 'app/frontend/views/site/', and most importantly, do not forget to add an action in the controller.