window dressing
noun /ˈwɪndəʊ dresɪŋ/
  /ˈwɪndəʊ dresɪŋ/
[uncountable]- the art of arranging goods in shop windows in an attractive way
 - (disapproving) the fact of doing or saying something in a way that creates a good impression but does not show the real facts
- The reforms are seen as window dressing.