* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  
}

body {
  height: 100vh;
  display: grid;
  place-items: center;
  
}

.zoom {
  position: relative;
  width: min(800px,90vw);
  height: 60vmin;
  box-shadow: 0 2px 6px rgba(0,0,0,0.3);
  overflow: hidden;
  cursor: zoom-in;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.zoom-image {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%,-50%) scale(1);
  width: inherit;
  height: inherit;
  object-fit: cover;
  display: block;
}