White space is the blank space, the empty space, between your content. Many people think this empty space is just a opportunity waiting to be exploited, eagerly awaiting the chance to cram as much content as possible into what’s left.
This is not a land to be conquered.
If that is your thought process STOP, back away from the keyboard slowly. White space or "negative space" is actually a tool in the fundamentals of both print and web design and is as easily as important as the content it surrounds. It’s the space we leave between all of your elements to give a layout elegance and clean form.