Things to learn:
Your CSS file should make each of these files appear like the pictures with each file. Note that you cannot change either html file. They must be exactly as they are given. You should copy them into your own site folder and then build your CSS file so that they appear to match the pictures.
The lines around each of the boxes are brown and 1 pixel.
The texture can be found at "http://icie.cs.byu.edu/images/background2.jpg"
The text inside of the boxes is 15 pixels high and 20 pixels from the right edge of the box.
The boxes are 30 pixels from the left edge and 30 pixels apart.
The curved corners are 20 pixels.
The shadow in the second page is dark gray.
It is 250 pixels from the right edge to the left edge of each box.
This is not all the information you will need, but it is enough that you should be able to produce the necessary style sheet. You will also need to dig around a bit to find all of the settings that you need. That is normal. Note that my style sheet was only 22 lines long.