The lowercase button problem

Question

Try lower cassing the letters with the "↓" button.
Why it is happening so🤔🤔
This is my code
https://code.sololearn.com/WkuUg3mobwCA/?ref=app

Answer 1

The shift is due to line 21 instead of replacing the div you are adding a div to its contents. Using outerHTML will replace the div and its contents.

@line21 aLetters.outerHTML ='<div style="fontSize: 1.3em;"... </div>