radial-gradient and linear-gradient
radial：
linear：
! translate could not be applied on inline elements eg:
there is an ease-in outback ease function
To set column for paragraph
make the paragraph in 2 columns, with gap of 10rem, with a dilimeter
hyphen attribute
set hyphen attribute for paragraph to generate auto hyphen
:target pseudo class in anchor
anchor:
target:
when target is selected, add the css:
when target of the page changed on another DOM element, the :target would be no longer valid
