#bghome{position:absolute; z-index:1; width:100%; height:100%;}
.logo img {visibility:hidden;}

img.ri{
  position: absolute;
  max-width: 100%;
  top: 10%;
  left: 10%;
}

img.ri:empty{
  top: 50%;
  left: 50%;
  -webkit-transform: translate(-50%, -50%);
  -moz-transform: translate(-50%, -50%);
  -ms-transform: translate(-50%, -50%);
  -o-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
}