Why I don't like CSS grids

Hey, man! CSS grid systems is fixed layouts. Elements' size in px - so 2002! I can't zoom in normally (and just read) - I need to scroll more. I can't make the window smaller (and just read) - I need to scroll more. Why?

So let me show an alternative. The... Invisible CSS framework!
Picture_2
I've been using resizeable layouts for a long time, so I decided to strip out the base. Don't Repeat Yourself, right?
<aside class="sideleft">
My cool sidebar.
</aside>
<section class="withls"> <!-- that means "with left sidebar" -->
Lorem ipsum dolor sit amet...
</section>
As you see, it's easy to use.
But don't think that you can't create something complex with it. Look:
Picture_1
Invisible contains a reset, font settings, some base margins, 50/50 and classic 2/3-column layouts.
It is modular and written in CleverCSS - the Pythonic CSS. Yeah, compiled with pake.
Download? Get it and use it - it's public domain! Also you can check out the source ( bzr branch lp:invisible ) and compile it by yourself - for example, with less modules. But you need clevercss and cssutils for that.