inner area transparency

In upgrading my site to latest twentyten version the inner background area (light blue area containing header, body, test boxes, menus and footer) is no longer transparent so the background image does not show thru as it used to. I have the Styles plugin active and also to the latest version.
Before I was able to use the following code at the bottom of the style.css

`/* code I added for formatting site */
/* rgba(195, 195, 195, 0.2) */

#container {
background: transparent;
}

#content {
background: rgba(84, 184,194, 0.2);
}

#primary,
#secondary {
background: transparent;
}

.widget {
background: transparent;
}

any help with getting the inner area background and everything it contains to be transparent again would be helpful.
Thanks

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