Why?

I don't want a Staff can see this but... why Chess.com not Support CSS and JavaScript? I want to make a announcements very nice, but without CSS and JavaScript, i can't do that

I'd say obvious security reasons?

just use <script> tags and style attributes

No, it just a HTML5, not CSS theme

Sécurité i think

huh???

No, that would put people out of their jobs. The chess.com crew is good at their job, it is fine how it is.