This example demonstrates a basic panning interaction within a bounded viewport. A draggable map area, containing an SVG red circle, can be moved by clicking and dragging with the mouse. The implementation uses plain JavaScript event handlers, specifically `onmousedown`, `onmousemove`, and `onmouseup`, to track cursor movement and update the map's absolute `left` and `top` CSS properties. The map's movement is constrained to a 400-pixel range in both axes, and it uses a Google logo image as its background.