In most cases, they ask someone to fix it for them, so they really have no idea what was done. In other, maybe a simple misspell of some word that they just ashamed to admit. Or simple laziness.
Much appreciated Austin as you provide the solution here too after finding. Many people ask for help and if they find solution they avoid providing it here.
Admin can close this topic - Found solution. CSS code can be effected in the default css file => themes\goblue\plugins\default\css\core\default.php