🔹 Card-mod - Add css styles to any lovelace card

Regarding my examples.
In most of them a non-optimized code is provided - just to demonstrate how to define a navigation path, like:

element:
  $:
    element:
      $: |
        element {
          ...
        }

instead of (where it is appropriate, see these rules):

element $ element $: |
  element {
    ...
  }

Also, in some cases we may use not the whole path:

element_1 element_2 element_3 {
  ...
}

but the shorter one (again, where it is appropriate):

element_3 {
  ...
}

+not to mention omitted “card_mod” keyword in some examples (used to be to required).