Unfortunately the size of the boxes is based on font settings, which are different for different users. Well, if you don't, we have others. Some of the search boxes don't work. Unfortunately search engines change all the time, and the sheer number of engines used in this site makes it difficult for me to keep up. This is a waste of time.
Books remain valuable and entertaining sources of information.
Even better would be javascript that allows one single box and a bunch of pulldown menus to choose engines, but that might be too minimalistic. Cooperate with search engine maintainers. We should also get reciprocal links back to nofuncharlie when this site becomes popular enough.