help my theme to get some style

the above pic is a div I created. The white border you are watching is not border, but its a div background, which appear when I roll mouse over div.

I used div:hover{background:#fff} to do this. I want to show a little pic on the left bottom (as you can see "read more") on mouseover.

I want to use white background and image at the same time. how do I do?

 

div:hover {background:url('urltoimage') no-repeat bottom left #fff;}

 

You could also just replace the Read More text with an image tag.