.parent{
  width:300px;
  position: relative;
  padding-top: 50%;
}

.parent .inner{
  
	position:absolute;
  top:0;
  left:0;
}

.parent img{
  width:100%;
  height:100%;
  /*position:absolute;
  top:0;
  left:0;
  right:0;
  bottom:0;
  margin: auto;*/
}