Added a lessons to the menu sidebar

Added a menu to the sidebar

add side bar

add scss style

add navigation

start project

fix bags ui/btn

add ui/btn

add ui into add records

add ui components into page add records

fix bags ui/input

add ui/input

new repository

added smooth scrolling, blur for calendar, smooth opening of modal windows

adding buttons on the main page, active service, meta tags

add style css