Do up some grid track sizing examples?

Hi, folks:

I've added some basic information to the track sizing properties.[1] But
these could really use some examples before making the user-friendly
explanations.

Anyone interested in doing up some cool examples? Using names as well as
numerical values?

Looking forward to it!

Julee
[1] http://www.w3.org/TR/css3-grid-layout/#track-sizing,
http://docs.webplatform.org/wiki/css/properties/grid-definition-columns,
http://docs.webplatform.org/wiki/css/properties/grid-definition-rows


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julee@adobe.com
@adobejulee