code: function( el, geometry ){
  
              el.style.width = '2px';
              el.style.height = '2px';
              el.style.marginLeft = '-1px';
              el.style.marginTop = '-1px';
              el.style[ borderRadius ] = '50%';
          }
docs: internal
  DomRenderer#pointProperties( el, geometry )
  - el (HTMLElement): The element
  - geometry (Geometry): The body's geometry
  
  Set dom element style properties for a point.