How do I modify the width of a TabContainer in Dojo

I'm experimenting with Dojo, so far it's very cool except for the fact that I can't seem to be able set the width o开发者_Go百科f a TabContainer. I have the following code

<div id="tabs" dojoType="dijit.layout.TabContainer" doLayout="false">
    <div id="javaTab" class="myTab" dojoType="dijit.layout.ContentPane" title="Java">
        <h1>Hello I'm the Java Tab</h1>
    </div>
    <div id="rubyTab" class="myTab" dojoType="dijit.layout.ContentPane" title="Ruby">
        <h1>Hello I'm the Ruby Tab</h1>
    </div>
</div>

This are the CSS:

#tabs {
width: 100%;
height: 100%;
}
.myTab {
height: 600px;
width: 100%;
padding: 0 !important;
}

If I put a menu bar inside the the tabs then I find that their width is larger than my screen so I don't see the complete bar. So is there a way to set the width of the generated "tab bar"?

Thanks guys!

Yup Peller is right, you can't set the size on each contentPane, but what you can do is to modify the width of the whole thing (tabContainer)