It certainly does work, however you should be able to override the style without using !important. Is there no way of applying SCSS to achieve such styling?
An importance rule is used to add more importance to a property/value than usual. In fact, if you use the !important rule, it will override all previous styling rules for that particular property on that element! and I think you know well.
From the user interface, it lacks any features but only has the website theme, and there isn’t much understanding of how it will function for the web page.