List Search Links

When i was a little kid, I was really scared of the dark. But then I came to understand, dark just means the absence of photons in the visible wavelength -- 400 to 700 nanometers. Then i thought, well, its really silly to be afraid of a lack of photons. Then i wasn't afraid of the dark anymore after that.
Elon Musk

:only-of-type

The :only-of-type CSS pseudo-class represents an element that has no siblings of the same type.
:only-of-type css reference