[deno]

Proper semantic with CSS styling is faster. You don't have to repeat <font/> tags etc.

CSS is more "complex" only if you lack understanding how it works. Main reason that Ruby on Rails was (is?) such a success is that proper MVC (MTV) design pattern implementation made things simpler.

Yet, for average PHP programmer that'd be more "complex". Same with (X)HTML + CSS. It looks more complex only if you don't understand CSS or using WYSIWYG tools.