When I click over this div link, a blue outline is showing around the div, how to remove this?

Question

https://code.sololearn.com/WRhu7EKJLfDY/?ref=app

Answer 1

in CSS code, in div{}, remove background-color:dodgerblue;

Answer 2

I want to use that color in background, I am talking about removing outlines when clicked over the div link.