New menu item does not retain menu font

URL: www.kryptidofficial.com I have used the Additional CSS to set the font for the Menu and everything looks fine. However, now when I click on the "Gallery" link, the "Gallery" page appears in a default Serif font, not the "Teko" font I chose and have set in the Additional CSS. The Gallery page has an image gallery on it so I thought maybe it was an issue inherent in that, but when I try to add a blank page I still have the same problem. All the other pages restore the font to "Teko" when I click on those links. But when I go back to the "Gallery" page, the Menu and the page title show up in the default Serif font again. You can see it in the site linked above when you click on the "Gallery" link.