html { 
	width:100%; 
	height:100%; 
	background: rgb(199,232,251);
	background: linear-gradient(28deg, rgba(199,232,251,1) 10%, rgba(168,212,175,1) 90%);

}

img {
   position: absolute;
   top: 50%;
   left: 50%;
   width: 250px;
   height: 168px;
   margin-top: -84px; /* Half the height */
   margin-left: -125px; /* Half the width */
}