[SOLVED] Some widgets in fixed position

Hello,

I need the text widgets and the social widget will appear at the bottom fixed all computer screens.
As it looks now, the normal computer screens see the widgets down, but in Iphone and Mac screens, The widgets appear at the middle and not at the bottom.

How it is possible to do so the location will be fixed?
Sure I have to use the code:

position: fixed;

But where should I put it?

Website: http://www.niryefet.com/

Thank you again.