/* Facebook chat plugin */
#fb-root > div.fb_dialog.fb_dialog_advanced.fb_customer_chat_bubble_animated_no_badge.fb_customer_chat_bubble_pop_in {margin-right: 2.4%;}
#fb-root > div.fb-customerchat.fb_invisible_flow.fb_iframe_widget > span > iframe {margin-right: 8%;}
This did the trick for me.
