Here we go – found that online and it works(scanlines because I called my background/logo scanlines.png) :
/*font: 0/0 serif;
background-position: 50% 50%;
Notice I commented the height and also the text – if you have text: uncomment. The height: I uploaded a transparent logo – space holder with the height I needed. I don’t use text but if you do you may need that. The fun part – suddenly my footer disappeared..duh..could not understand why – and then I thought about that text in the css – commented and my footer is back.