macOS 10.13
Force a pseudostate on an element
Forcing a pseudostate (:active, :focus, :hover, :visited) on an element is useful for debugging and editing style rules that apply only when these element pseudostates are active, and it doesn’t require you to interact with web content.
Scroll up while moving the mouse over the Styles section of the details sidebars to see the pseudostate options.
Select the appropriate checkbox to force a pseudostate on the selected DOM element.
See alsoEdit JavaScriptEdit CSS rules