Refinement, site support

https:lrc-vrn.ru
Need:
-Take out the possibility of replacing documents from the basement to the admin
-Add the ability to add pages with a description (websmirno.site/medin/html... (no side menu))
-When running on mobile devices and when viewing second and third-level pages, turn on the side menu at the top of the pages (as in the template) (address, opening time, etc.)
-To refine fonts in a slider (example: websmirno.site/medin/html...
-Increase animation speed when flipping through sliders
-Provide the possibility of further support, refinement