I am trying to make a simple mobile website (only to run on mobiles) with bp. (it contains 7 images back to back) and a fixed div on top (with sliding up & down menu bar in the top most fixed div)

What i am not able to figure out is the proper css elements for each of them.

1) why are the pics chosen by me is taking 100% size on all elements (i want these pics to take 100%) - i am sure i am unable to put css properly.
(index.html is below) or you can check -- www.am2pm.asia