Zoomed-out sizing in twitter bootstrap?

Question

I like the sizes of all items using twitter bootstrap when (in my browser) I've zoomed out twice, ctrl -, ctrl -, rather than the default, viewing with ctrl+0.

Zooming affects font sizes, the responsive design, and a dozen of the other great reasons I want to use bootstrap, so I don't want to hackishly just fix a width and break all of that.

Does Bootstrap have a single CSS value (or a small set of them) that I can change somewhere that produces something like this zoom and sizing? I realize setting zoom itself is more of a browser-issue, so I'd rather not hard-code it that way, either.

EDIT

The answer might be closer to this:

Setting max width for body using Bootstrap

...which suggests no? I have to recompile bootstrap?

Answer 1

With css you can do:

body {
    zoom: 75%;
}

See: http://dev.w3.org/csswg/css-device-adapt/#the-lsquozoomrsquo-descriptor

and What Does 'zoom' do in CSS?

It appears that zoom may not (as of August 2013) be currently supported in Firefox.