Talk:Events/@comment-25070696-20140616175653/@comment-5754239-20140619020437

Basically these are headers, which use equals-signs (=) in the source editor. They go by level, as you say, depending on how many ='s there are. For example, the code for a Level 1 header (or h1 as it is called in the HTML language) looks like. For Level 2 it looks like, and so on.

Specific to your question, you need to add one more pair of ='s to the Halloween section.

EDIT: Oh, and if you need more help just check out Wikipedia:Help:Section.