how can we remove the box appears in the field when filling form ?

Question

in any input box when we fill data a rectangular box like a border cames on the field, I think it is automatically happens because of HTML , how can we remove it using CSS

SEE THE CODE FOR EXAMPLE*** When you click on password field or username field then a rectangular box appears
https://code.sololearn.com/WE96VJud7eDQ/?ref=app

Answer 1

the CSS you can use is #key:focus { outline: none; }

Answer 2

Nathan Stanley Thanks, very very thankful to you 😊