A Guide on Page Design, White Space, and Readability
Take advantage of conventions Create effective visual hierarchies Break pages up into clearly defined areas Make it obvious what’s clickable Eliminate distractions Format content to support scanning
Steve Krug • Don't Make Me Think, Revisited: A Common Sense Approach to Web Usability (Voices That Matter)
clear separation between page content and the rest of the page shell (which includes header, navigation, footer, supporting information, and page sides).
Maura Ginty • Landing Page Optimization: The Definitive Guide to Testing and Tuning for Conversions
Put more space between items that don’t go together and less space between items that do. This sounds like common sense, but many Web page layouts ignore this idea.