Pages not rendered correctly
Some pages cannot be rendered correctly. Here's an example: http://www.nfl.com/news/story/0ap3000000661844/article/schottenheimer-colts-not-altering-how-luck-plays Refreshing the page doesn't do anything either.
It renders just fine for me. Try updating Vivaldi, and if you're using the latest version, re-download Vivaldi.
Looks completely normal here.