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Afraid Of Thanksgiving?

Elephant's Picture Book

Illustration:  Thanksgiving Greetings.  Postcard.   Printed in Germany.  CA 1910.

Thanksgiving Greetings.


Printed in Germany.  CA 1910.

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WordPress Twenty Twelve theme rocking with rem relative lengths in CSS

I started messing around with the new twenty twelve theme. In the notes at the top of style.css, I found this:

— This stylesheet uses rem values with a pixel fallback. —

(full rem note from twenty twelve style.css –

I had never heard of rem values before. I brought it up at the Coco WordPress Wednesday table and no one there was familiar with them either.

It's sort of a super-charge em value in that you can define the base in the html or body element and that will always be base no matter how deep you go with parent/child relationships with your CSS. Browser support isn't bad although it's recommended to use a pixel fallback for the older browsers.

Some googling led me to the W3C site where I found that there are all sorts of relative length units I'd never heard of: ch, vw, vmin, vmax, and vh.

Here are a couple of links for further rem reading.