3 divs.. how to expand middle

Float left left and float right right - both come before the middle column in the source. Then just give the middle column margins left and right equal to the width of the floated columns.
Although I think this method may be a bit suspect as a way of doing rounded corners.

I agree. It seems to be thinking in terms of tables for layout. Using CSS you don't make a column just for right and left borders. If it is a one column layout then just make a one column layout with an appropriate background image.

Well It's not just a one column lauout...
It's to make a kind of header graphic with a halv rounded box, so it's only top left and right that has to be rounded... and it's for making the middle box stretch out to the corners so that I can have it be a percentage width...
But i manged to do it with absolute position like I want.... But just got scared 'bout the absolute after some reading in here... seems that everybody says... DON'T...
But you can see how i did it og what I meant here
And dont mention the look and layout... it was just an idea and the design is just some testing for now:-)

:shrug:

Looks like a one column layout to me.

My blog is also a one column layout with rounded corners.

Yes I see your blog.... But it doesn't do what I want...
It does not expand like I want and like mine you for now....
It was easy to make one column with a background image if I wanted a fixed width... that is not what I want... I want a percentage width so that it expand... But well i'll keep playing with it... but for now the way I did it seems to work...
But thanks for the answers.. still helped a bit

It is the same technique as here.

As you can see you can either make it fixed by defining a fixed width or expanding by simply leaving out a fixed width. One column. Rounded corners. Whoopee.

As you can see you can either make it fixed by defining a fixed width or expanding by simply leaving out a fixed width. One column. Rounded corners. Whoopee.

edit - Ah, thanks to a recent post by kk5st I now know that this technique is called Thrashbox. http://www.vertexwerks.com/tests/sidebox/

It is my favorite version of rounded corners because it doesn't rely on a bunch of extra divs or javascript.

There's actually an update to that technique linked to from that article: http://www.modxcms.com/simple-rounded-corner-css-boxes.html

The problem I found with that technique last time I went looking for one was that it's not fluid. He says at the bottom that he'll attempt that in Part 3 but Part 2 hasn't emerged yet and Part 1 was written in January.

For a round-up of just about every rounded corners technique known to man: http://www.smileycat.com/miaow/archives/000044.html

The problem I found with that technique last time I went looking for one was that it's not fluid. He says at the bottom that he'll attempt that in Part 3 but Part 2 hasn't emerged yet and Part 1 was written in January.

For a round-up of just about every rounded corners technique known to man: http://www.smileycat.com/miaow/archives/000044.html
Ah, I didn't notice the update. It still breaks with a few text size increases.

I modified the technique combining it with faux columns so that it won't break with text size increases.