How to explain to the customer that ready-made modules for magento2 are not the best choice?

Question

Magento

Hello!

There was a problem that I can’t solve on my own) I received an order with a rather large budget for developing a site on cms magento2. I read the TK, everything became clear, I write to the customer. He asks: "What modules are you going to use?"

I was a little surprised and replied that I was going to write the modules myself, with the exception of what is already either built into cms or can be bought for a conditional 6,000 rubles.

In response to my explanation, I get the following: "No, I want my order to be implemented using developing modules, as they develop after the system. I also want to read about the modules that you will use in order to make sure that that they are developing" (messages copied, author's grammar preserved)

Strictly speaking, the question itself: What to do? How to convince the customer that most of what he wants to get on his site is not implemented in ready-made modules and in any case he will have to resort to self-writing?

Answer 1

On the one hand, he can be understood, he wants to be sure that in the next. versions of its modules will not fly on *****. What guarantees do you give him for your self-writing \ support? I would collect all the arguments and give it to him, but iron ones are needed.
In general, who pays, he orders the music)

Answer 2

toggleClass('#active');I'm sorry, what?
In active styles, you have an id, not a class, but you are trying to toggle a class, while also writing it with #

Answer 3

if you want to set up a hamburger, type in Google "JQuery.mmenu description and settings" everything is described in detail there.

Answer 4

Native version - https://codepen.io/anon/pen/GOQVvq