How to apply z-index on background-image?

[Sincerity56]

Here is the code :\[code\]<div style="background-image: url(/Images/Main/BackMain.png); z-index: 2"> <div style="background-image: url(/Images/Main/BackMain1.png); z-index: 1"> </div></div>\[/code\]The above code doesn't show \[code\]BackMain.png\[/code\] on top of \[code\]BackMain1.png\[/code\] which is what I'm looking for.