How to remove a regular expression pseudo-selector?

Question

css

Good day, how can I remove the pseudo selector from the rule with a regular expression?
Example

p::hover{

}
b:ntd-child(2n){

}
a:first-letter{
  display:block;
}
a::first-letter{
  display:block;
}

To become

b{

}
p{

}
a{
  display:block;
}
a{
  display:block;
}

I wrote, but it deletes everything https://regex101.com/r/Ij3WaL/4

Answer 1

:(.*?){https://regex101.com/r/Ij3WaL/9