I don't even know how much plain HTML and CSS would help you help you with C/C++ programming. Perhaps it would get you accustomed to pounding in things at a text editor, but not much else.
If anything, I'd say if you've never programmed before, give Java a whirl for a bit. Easy to setup and get started with, and less headaches to worry about like memory management and what not.
If you're brave, do go ahead and try C/C++. Start simple and work your way up, of course. Actually, if you can afford to, maybe just try out C/C++ first.
I personally started with Basic, and then progressed to a mixture of Java and C++. To some extent, I regret that. I wish that I had started off with either Java or C++. In fact, for C++, the sooner that I could have wrapped my head around memory management and pointers and what not, the better... and I'll admit that even today, my mind is still fuzzy on all these, since, I've primarily used Java for my past and present jobs.
Like when I first programmed with Visual Basic, I was passing everything around by value. But only until I learned C++ a few years later did I learn that this was a terrible idea - especially for large arrays, structs, and classes. Starting off with C/C++ would have made my Visual Basic code a lot more efficient haha.
I'd say don't shy away from it just yet. I think you might be surprised at how much you might be able to pick up and do. Definitely give some learning a shot before you decide whether or not you're up to it or not.