Board Thread:Support Requests - Designing Your Wikia/@comment-26332687-20150715132832/@comment-452-20150715134810

Yes.
 * What you're talking about has nothing to do with CSS. "CSS" stands for "Cascading Style Sheets", which is applied using style attributes, or external style sheets which usually end in .CSS
 * Anchor tags are not required.
 * Category:Category1 doesn't exist.
 * "Champions/" is not the same page as "Champions"
 * Putting / at the end of a html tag is only required when you are not using a matching closing tag.

See Help:Navigation.