fixed relative position of chevrons
fixed relative position of chevrons

Signed-off-by: David Loffredo <db664da926ba28b60bc091f13bc0bb16d1674c0e@steptools.com>

steptools/NC.js,steptools/StepNCViewer,steptools/StepNCViewer,steptools/StepNCViewer,steptools/NC.js,steptools/NC.js