<div style="background-image:url(https://res.cloudinary.com/rebelmail/image/fetch/w_100,h_100,c_fill/http%3A%2F%2Fcdn2.ahalife.com%2Fassets%2Funcategorized-new%2F448%2F800wide.jpg);"></div>

div{
  width:90vmin;
  height:90vmin;
  margin:0 auto;
  filter: blur(20px);
  background-size:cover;
  animation:sharpen 1s;
  animation-delay:5s;
  animation-fill-mode: forwards;
}
div::after{
  content:'';
  animation:preload 1s;
  animation-delay:1s;
}
@keyframes preload{
  0%{
    background-image:url(https://res.cloudinary.com/rebelmail/image/fetch/w_1000,h_1000,c_fill/http%3A%2F%2Fcdn2.ahalife.com%2Fassets%2Funcategorized-new%2F448%2F800wide.jpg);
  }
}
@keyframes sharpen{
    0%{
      background-image:url(https://res.cloudinary.com/rebelmail/image/fetch/w_100,h_100,c_fill/http%3A%2F%2Fcdn2.ahalife.com%2Fassets%2Funcategorized-new%2F448%2F800wide.jpg);
    filter: blur(20px);
    }
    100%{
      background-image:url(https://res.cloudinary.com/rebelmail/image/fetch/w_1000,h_1000,c_fill/http%3A%2F%2Fcdn2.ahalife.com%2Fassets%2Funcategorized-new%2F448%2F800wide.jpg);
      filter: blur(0px);
    }
	}