Theme Problem: Stretch Item of Theme

[rafadn]

Hi!

 

Could anyone please help me to modify the layout of my theme? The problem is, as you can see in the attached photo, that the footer module goes over the footer image of my theme (small light silver rectangle). Is there any way to stretch the indicated image (the light silver rectangle) so it could properly contain the footer module? If not, could you please tell me how to lower the footer module in order to let it go under the light silver rectangle, thus into the darker silver part of the page?

 

 

Thanks!