How to change wordpress avada theme header border color or remove the border completely?

I was working on wordpress avada theme esports demo. According to my design requirements i don't want the header border. See the image bellow-

After doing some study i finally got the options as describe bellow.

1. At first you need to go to the theme option then go to the header section & go to the header styling options.Check out the image bellow-

2. Now find the Header border color option which has marked on the above image.

3. Now you need to give the opacity to 0 to completely remove the border or you can change the color also.

Hope it will help you guys too...............😀