How to remove outline in bootstrap 4

Question

I want to remove textbox outline in bootstrap 4 but its not working. please let how can i remove this line.

CSS

Answer 1

as far as i see from your css, you set the border to 0 then again to 1. replace it as below

#content #main-content input[type=text]{
 border: 1px solid #ccc;
 border: 0;
 height: 40px;
 padding-left: 10px;
 outline: 0;
}