Not working in web files such as html?

[c02y]

https://emacs.stackexchange.com/questions/17183/is-there-a-plugin-that-does-color-html-matching-tags-like-rainbow-delimiters

[Fanael]

I'm not sure what the problem is supposed to be. rainbow-delimiters doesn't highlight HTML tags because that's not what it's for.

It should be possible to highlight HTML tag pairs, but that requires some help from the major mode (especially considering void elements and optional closing tags) – and I don't want any major-mode specific code in rainbow-delimiters, so it'd have to be a separate package.

If there's a generic way to find the bounds of some generic block (e.g. a pair of parentheses, begin..end (compare #20) or a pair of HTML tags), I'm not aware of it.