I have strange symbols that i did not put in my self appear, on pc or phone

Question

https://code.sololearn.com/WJJkRx3L19lc/?ref=app

Answer 1

It does not happen here but the same copyed code does on my website

Answer 2

https://bibxbshnkqzkpkzan99lhw-on.drv.tw/www.myRoot/online-safty.html