#header {
  background: white url(/index.php/view/media/getMedia?repository=rep18&project=public_sciences_participatives&path=media%2Fthemes%2Fpublic_sciences_participatives%2Fcss%2F/sciences-participatives-header.jpg) no-repeat;
  background-position-y: 75%;
  background-size: auto 150px;
}
#logo {
  background: transparent url(/index.php/view/media/getMedia?repository=rep18&project=public_sciences_participatives&path=media%2Fthemes%2Fpublic_sciences_participatives%2Fcss%2F/sciences-participatives-logo.jpg) no-repeat;
  background-position-y: 75%;
  background-size: auto 150px;
  margin: 0;
  opacity: 90;
  height: 100%;
  min-width:380px;
  float: right;
  display: block;
}
#logo2 {
  display:none;
}
#title {
  display:none;
}

@media (max-width: 640px) {
  #header {
    background-position-y: -250%;
    background-size: auto 100px;
  }
  #logo {
    background-position-y: -250%;
    background-size: auto 100px;
    min-width: 145px;
  }
}

@media (max-width: 360px) {
  #header {
    background-position-y: 0%;
    background-size: auto 75px;
  }
  #logo {
    background-position-y: 0%;
    background-size: auto 75px;
    min-width: 110px;
  }
}