Fix and improve the layout, functionality on Opencart 2.3

Hello.

The site has problems with layout, functionality. Something to fix, something to refine, something to do because there is none. Opencard Site 2.3. You need a person with a good attitude to his work and its results. In turn, we will satisfy the financial desire of the performer in the right quantity.

Task https://docs.google.com/document/d/1myZOJ4PWoqOJSV...

We do it in stages.