Ascension Theme White Line across header

[MusicMaker]

I installed  the Ascension theme on a dummy site to work out the design. When it came time to set up my website, I moved the files and did the export/import thing.  Everything went smoothly, but now I have this horizontal white line that  extends across the header image on all pages except the home page, and  ends under the title. See below.

I don't like it.

Oddly, the old  site, that is still up, doesn't have the white line. I can't figure it out. The theme is up-to-date, as is Wordpress.

Does anyone know why this is happening and how to fix it?

[JesseW · Accepted solution]

Hi @MusicMaker. Thanks for being part of GoDaddy Community! Try adding the following to your CSS. I think that should do the trick. 

.page-header {
 border-bottom: 0px;
}