Clickjack project tasks help needed

I have a question regarding clickjack.

I need help with following task.

•  Each overlay must cover the Info link entirely. However, the width of your overlays should not  exceed the Info link column.  

• Properly positioning overlays for different search results is critical.  

• Overlays for one Info link should not collide with an overlay for another Info link,when performed multiple purchases of different products on a given search results page.  

• Each item can only be purchased once on the search results page.