[Box] Display prop and storybook

[aweell]

How the prop currently works accepts any display CSS property as a string, this is problematic since there are 17 (Let's remove the two-value syntax since it doesn't have full support yet...) possible values for that property.

• Should we contemplate in the box.stories.jsx all possible CSS display values?
• Should we restrict the type of display the component can have? (e.g. block, inline, none, flex, grid, inline-flex, inline-grid, and flow-root).

References:

• Accessibility concerns about display: contents
• CSS Tricks - Display
• CSS Tricks - Two-Value Display Syntax (If anyone interested 🤓)

#566 (comment)

[GomezIvann]

Box component doesn't exist anymore, we can close this.