Sidebar
Sidebar is a fixed area on the left side of the screen, with a height that follows the height of the screen and that has independent scrolling of the page. Must always be used in conjunction with Main.
Content area
It is 300px wide and the height is always equivalent to the browser height minus the Navbar height.
When the total height of the inner elements is greater than the available height on the screen, the Sidebar will be scrollable.
Vertical navigation
Sidebar should be used together with VerticalNav to create navigation for a given application context.