1. A method of content presentation, comprising: detecting position of a pointer relative to a content element in a graphical user interface displayed on an electronic display screen; displaying a popup window at a location on the graphical user interface while the pointer hovers over the content element, wherein the popup window frame structure includes a bump zone that comprises a fixed visual bump zone graphical indicator displayed on an edge of the popup window frame structure indicating that the popup window is moveable away from the content element to another location on the graphical user interface; detecting proximity of the pointer relative to the edge of the popup window including the displayed bump zone while the pointer hovers over the content element; and selectively transitioning the popup window to a new location on the graphical user interface based on a user interface model and the detected proximity of the pointer relative to the edge of the popup window including the displayed bump zone.