This is all good stuff. Thank you. Themes are a good idea. A printout mode is also on my list of wanted features. It's a bit tricky to implement because of the

This is all good stuff. Thank you. Themes are a good idea. A printout mode is also on my list of wanted features. It's a bit tricky to implement because of the collapsed sections. You are right, the book title is currently visually competing with the top graphic banner and it is a little awkward. This is the result of trying to do a landing page in a textbook oriented format. I should find a better solution to this. As for the wake turbulence pic, Bookvoid allows me to float graphics left or right and have text wrap around them and it looks better on large devices. However, text wrapping around images sometimes end up squeezing text too much on smaller devices. I will try to find a solution, maybe conditional css or javascript that allows me to achieve best of both world. Good catch. Interesting take on the Bookvoid name. I had difficulty finding a good name. In the end, the color scheme and name were inspired by an artist I like: Yves Klein http://en.wikipedia.org/wiki/Yves_Klein#The_Void http://en.wikipedia.org/wiki/Yves_Klein#The_Void