#header-region{
  /*background:url('/sites/liffre/files/inline-images/bandeauRapide.jpg') no-repeat center center;*/
   background:url('/sites/liffre/files/inline-images/bandeau-OIL.jpg') no-repeat center center;
  /*background:url('/sites/liffre/files/inline-images/bandeauEPLstandard.png') no-repeat center center;*/
  background-size: 350px; /*à ajuster*/
}