JavaScript line numberring code

Question

Can some help me fix my code please
It's a text editor with line numbering
It's working tho but as the lines increases the numbering won't be in same line with the texts and it gets scattered somehow
https://code.sololearn.com/Wejm1qISM98C/?ref=app
https://code.sololearn.com/Wejm1qISM98C/?ref=app

Answer 1

How about numbering in a textarea too.