Layout issues Q and A pages

Hi,

I need css assist to following questions:

1. In Firefox, there's a layout issue in the ask a question wysiwyg editor. The editor pan is not using the full width of the page. This only happens in Firefox. http://bit.ly/1ghaOpQ

2. Questions are shown in full width. There's no left/right margin. http://bit.ly/1SjaVjD

The layout should display properly like in 'question' page.

Please provide me css to solve these issues.

Thanks.