Update style.css

My first ever pull request in response to #25.
Merge pull request #32 from tonyokonski/dev

Update style.css
adjust sponsor styles; initial responsive sponsor logo
Fix comment box decoration in IE9 by adding -ms-transform
adjust sponsor styles; initial responsive sponsor logo
Merge pull request #34 from httpster/dev

Fix comment box decoration in IE9 by adding -ms-transform, re #8
call promo images from CDN
sponsor logo now displays based on passed parameters — height, width, hidpi
remove the new event listener when done with it