:root {
  background: #fff;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  min-height: 100svh;
  display: grid;
  place-items: center;
  padding: 24px;
  background: radial-gradient(circle at 50% 25%, #f7f7f7 0, #fff 65%);
}

img {
  display: block;
  width: 128px;
  height: 128px;
  object-fit: contain;
  image-rendering: pixelated;
}