The short answer is no.

But to give you the rationale as to why, it's because during onboarding, we worked with your team to identify and dial in your brand.  We created a custom CSS for your website. CSS stands for cascading style sheets and applies to fonts, colors, spacing and other stylistic elements on your website. 

Creating a custom CSS and locking it down means that you will have a consistent look and feel on every page of your site.  As multiple people are editing the website, it helps to maintain your brand integrity.