How remove focus line on buttons SASS

[nardbyte]

Hello good day for everone, today im coming to give a question.

I hope you can help me solve this question that always comes to mind when I start a project with boostrap.

How do I remove the shadows and lines that appear when I press the buttons and text fields.

I've been reading that with form-control: focus, however, with me how to do this modification with SASS.

If anyone can help me I really appreciate it.