88: Placement of mobile UI componentshttp://en.wikipedia.org/wiki/Rule_of_thirdshttp://www.colorzilla.com/gradient-editor/http://en.wikipedia.org/wiki/Golden_ratio#Aestheticshttp://en.wikipedia.org/wiki/Headroom_%28photographic_framing%29http://en.wikipedia.org/wiki/Lead_roomhttp://en.wikipedia.org/wiki/Golden_spiralhttp://en.wikipedia.org/wiki/Golden_angle