Micro Responsive Grid - a tiny little fluid grid

I'm not a designer, and have limited experience (Bootstrap, 960, Bourbon, etc) with (S){C,A}SS frameworks/libraries, so maybe I'm just being ignorant.<p>Can someone explain to me why there are so many grid frameworks? There appear to be quite a limited number of features, being responsive, dynamic grid sizes maybe? So what's the reason for so many designers 'rolling their own' 'handmade' 'little, tiny, light, nimble and small' grid frameworks?<p>I'm sure there is a reason for it, but from the perspective of an outsider (sort of), it looks like there is an excessive number of options.

That actual page isn't using it, is it? Is there a demo up somewhere? I had to clone it to take a look.<p>Nice and simple - it's hard to judge behaviour without seeing a bit of content or blocks, or something. Suggest you add a little more to the example (eg <a href="http://960.gs/demo.html" rel="nofollow">http://960.gs/demo.html</a>).<p>It's good to have light example like this to work from. I find things like bootstrap to be completely unapproachable. I spend so much time looking through their src to get slightly non-standard behaviours that it's almost always easier to write my own.

Really nice. I would recommend not animating font-size transitions when resizing. Eye candy can distract the viewer and detract from your message. For a design portfolio it may be more impressive, but for most use cases, I feel it would work better if resizing was instant.

A preview of the demo in the repo:<p><a href="http://htmlpreview.github.com/?https://github.com/roybarber/micro-rwd-grid/blob/master/index.html" rel="nofollow">http://htmlpreview.github.com/?https://github.com/roybarber/...</a>

Look's interesting - could you pop a demo link up to go alongside the article or readme?

a nice framework and a great site, good job!