List Australian Post Codes

All of humanity's problems stem from man's inability to sit quietly in a room alone, wrote Blaise Pascal.
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:focus-visible

The :focus-visible pseudo-class applies while an element matches the :focus pseudo-class and the UA (User Agent) determines via heuristics that the focus should be made evident on the element. (Many browsers show a "focus ring" by default in this case.)
:focus-visible css reference