Remove extra margin-top from h3 styles

[Rexicon226]

This is a completely unused line of code; margin-top is defined twice, and is overridden, making the top line completely useless.

🤔

[HebaruSan]

Hi @Rexicon226, did you intend to submit this, or was it a mis-click? I ask because I know GitHub's web UI can be tricky to learn, and the description of the change is missing, which we need in order to review it. If you didn't intend to suggest this for inclusion in the SpaceDock core code, we can just close it.

A pull request should always include:

• Explanation of the problem you're trying to solve
• Before and after screenshot of affected parts of the site, when changing a stylesheet
• Some indication that you understand the implications of what you're changing and have checked that it'll be OK in general

At this point with h3 a very commonly used element across SpaceDock and margin-top a pretty impactful stylesheet property, the sane thing to with a pull request making this change for no stated reason would be to just close it. If you can flesh this out within a couple of days, we won't have to go that route. Cheers!

[Rexicon226]

Sorry about the lack of detail, I was looking over the database, and I noticed that this is a completely unused line of code. I'm not too bad at front-end design :P. If you look closely you can see that margin-top is defined twice, and is overridden, making the top line completely useless. I think that practicing clean code should be a priority. @HebaruSan