How do I remove the blue border that appears when clicking on a uib-accordion-heading?

Question

I\'ve tried the solutions presented in the following questions to no avail:

Remove blue border from css custom-styled button in Chrome

How to remove the blue box

Answer 1

The blue line came on the bottom of my word document when I took too long to close it.

I got rid of that line when I clicked, in the upper right hand corner, the box to make the screen larger.