How to hide side category menu for the mobile devices

And for the mobile devices, the copyright menu can’t be fully displayed.

Dear @atmercato your help is great.
I was in the middle of updating the theme however I stopped in order to add if possible your new issues inside the new update.
So could you please explain me more?
Could you please attach images?

For the first one. It is true that the on the desktop is great. But I said it because it doesn’t looks very well for customer who enters the site on mobile devices because what they see first is only a category menu. It might be better if the menu is replaced by the header image ONLY for the mobile screens.
https://ibb.co/bB78w2z
The second problem I said actually doesn’t exist, because I double checked it, and found it worked well.
But there is another small problem, that it seems like that the footer widgets are displayed too big for mobile devices.
https://ibb.co/kJGpQQt
And for the last thing, since i am using the YITH Quick View, that the “add to cart” and “quick view” cannot be seperated. https://ibb.co/4ZjHW47
To sum up, almost everything (Except there are some places like titles on the first like “Featured products” and the “No products in the cart.” when there is no products in the cart, I don’t know how to translate) for desktop display are great, but there is a problem for display on mobile devices.

I found another one. That the icon Sale covers the top menu.
https://ibb.co/19qX7Zk

Dear @atmercato I have updated everything and in the next few hours I will upload the newer version. The only I havent done is this one:

For the first one. It is true that the on the desktop is great. But I said it because it doesn’t looks very well for customer who enters the site on mobile devices because what they see first is only a category menu. It might be better if the menu is replaced by the header image ONLY for the mobile screens.

because it requires some good planning.
I will keep you update throughout the day.
Cheers
Archimidis

Theme updated ??