CSS, select an element that have div:not(something) possible ? [ solved ]

Hi everyone,

I have something like this

<div id="container">

    <div>
        <div class="foobar"></div>
    </div>

    <div>
        <div class="foobar"></div>
    </div>

    <div>
        <div class="foobar"></div>
        <div class="barfoo"></div>
    </div>

    <div>
        <div class="foobar"></div>
    </div>

    <div>
        <div class="foobar"></div>
    </div>

<div>

I would like to select all the #container > div (the childs of container)

that do not have a div.barfoo in their childs.

is it possible with CSS ?

I'm at

#container> div :not(div.barfoo) {} 

but this is not working, and will select anyway #container > div > div

Any ideas ?