I installed the Kirki plugin and the problem is now solved. Thanks for the response.
That did it. Thanks.
<div>Actually it is not the color I want to change but the opacity. The pages I need to change this on are on each individual post. The header that has the featured image is where I would like to change the opacity. I want it to be for all blog posts. Below is a link to a screenshot of the element I am talking about.</div>
https://1drv.ms/f/s!AuBkiERgQuNRiwFSPgsFOGtIJx_a
I added the custom css, but still do not see where to make the change. Do I have to alter the code for changes?
I figured it out. I had to uncheck the MegaMenu checkbox for that menu item. Seems to work now. Thanks.