Practice CSS Attribute Selector
data-example
AAA1
AAA2example
exampleAAA3
AA4(\n)example
_BBB
BBB_
_BBB_
aaa_BBB_cccc
(\n)BBB
BBB(\n)
(\n)BBB(\n)
Aexample Bexample
CCC1
enus (Not Match)
en
en-us
en--uk