Browser compatability

Hi,

i have created a Survey site , in that i have placed a multiple radio buttons for a single question,

i kept background image for the radio buttons , over the background answers will be displayed , if i click the background image particular answer will get checked ,

ISSUE is

It looks perfect in Mozila and IE

in chrome the allignment of the answers is not proper ,

an one can help me in this issue its very urjent for me