.fullwdesk {
  position: relative;
}

.fullwdesk img {
  position: absolute;
  top: 0;
  left: calc(50%);
  transform: translatex(-50%);
  object-fit: cover;
  height: 100%;
  width: 100%;
} 

.offset-image {
position: relative;
width: 100%;
}
.offset-image img {
object-fit: cover;
width: 100%;
height: 100%;
}