It's not there or I wouldn't have asked. It's blank...
Ah, it looks like all the white bits are black for you, except "options". Here's what it looks like for me, perhaps the various buttons are still clickable?
It's very odd that its showing strangely for you. Do you have some user styles that could be overriding the styles? The game is really just some HTML, so its styling may be overridden by other styling. The white text everywhere is coloured by the same style though, so it's very odd that "options" still displays correctly. Have you tried Inspecting the various elements to see whether they exist, and if they do, where the black colour is coming from?
I am not a programmer and I have no idea what you're talking about regarding inspecting elements.
Again, my screen is normal like yours IF I enter the game first and THEN click on options. If I do it from the TITLE SCREEN it's all screwed up and I have to refresh as there is no BACK button.
If that doesn't make sense I can try to figure out how to record my screen to demonstrate.
It doesn't bother me enough to investigate and try to figure out how to fix it on my end. I don't have those kind of technical skills and would rather just refresh when I forget or just not play.