Superscript/subscript in cactus theme not work

[nanhung]

My question is that I used cactus as my blog's theme. But the function of subscript and superscript can't work in this theme. I did try to test the function H~2~O and r^2^ in the default (lithium), and it works well. Any suggestion?

[yihui]

Too little information... Where is your example?

The author of the cactus theme should be the better person to answer your question.

[nanhung]

Here are the examples:
This is the default theme

This is the cactus them.

Since this test in rmd file not md file, I'm not sure the author of the cactus can solve this problem.

[nanhung]

Uh~problem solved. It seems that the cactus author forgot the definition in css file. Here is my revision. Sorry for bothering you.

sub {
  vertical-align: -0.6em;
  font-size: 0.6em;
}

sup {
  vertical-align: 0.6em;
  font-size: 0.6em;
}

[yihui]

Glad you figured it out!