Finalization of the site

It is very desirable that the Contractor is in the trend of site building, understands how to arrange the elements and blocks of the site to increase sales.

The site needs to be improved https://marpla.ru/
1. Make the layout adaptive (currently on mobile devices the site breaks)
2. Speed up the loading of the site
3. Provide a block under the video on the first page of the screen
4. Display of the menu icon and, accordingly, the menu itself when you click on the icon
5. Make the video unit more compact and enjoyable
6. Since new pages will be added to the site, it is important that the Contractor is able to quickly add pages to the site by a person who is not a programmer. (admin panel is not necessary)

Please, in the answer to the order write the cost and terms