Editing h3 tags

Hi:

I need to edit my h3 tags, if I can, because as far as I know they aren’t being used and I want them to organize longer posts, you know, like sub-headings.

I went into my style sheet and changed the reference to h3, but its not working. I notice a lot of further references to the h3, but I am a little hesitant to go in and just start slashing at the code. Can I hack out the first reference (which lumps h1, h2, and h3 together)? Or is the later stuff the problem?

Here is what I did (not a lot of code), went from this:

h3 {
font-size:1.3em;
}

to this:

h3 {
font-size: 1.1em;
color: ##97FFFF;
}
And I wouldn’t mind a text decoration, but it doesn’t work.

Is there anything I can do to get these working right?

The site is:
https://www.gongshangfa.com