I got it myself to show an image in the center of another image on hover
HTML:
CSS:
.imageBox {
position: relative;
float: left;
}
.imageBox .hoverImg {
position: absolute;
left: 350px;
top: 100px;
display: none;
}
.imageBox:hover .hoverImg {
display: block;
}
Note that left: 350px and top: 100px will be changed based on your background-image in my case background-image was 700x200(width x height). So in order to position the image to the center just take half of width and height.