Created by: peterpeterparker
There was I think I small typo mistake in following sentence of the documentation bootstrap/docs/4.0/utilities/display.md
To show an element only on a given interval of screen sizes you can combine one .d--none class with a .d--* class, for example .d-none .d-md-block .d-xl-none will hide the element for all screen sizes except on medium and large devices.
Therefore I modified .d-xl-none to .d-xl-block