The world lives on data. Data is all around us and in many forms: salespeople need to know what customers have spent; twitter users want to know what their friends are saying. How do we as developers ...

Last time, I made a list that appeared in a tab, and all was well. Now I have one not in a tab, and it show up with this big black bar on top. The bar doesn't seem to be a header, an element, a margin ...