Board Thread:Support Requests - Getting Technical/@comment-3271569-20151022122834/@comment-168424-20151023021642

Your criteria for "improvement" is not clear.

You can request unlocking of specific MediaWiki: pages here: MediaWiki pages that should be whitelisted, but aren't.

You can't mix up CSS and JS as the security problems between them are dramatically different. You will need to request access to the JS review tool via Special:Contact/general.