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

html,
body {
  height: 100%;
}

body {
  background: #0F766E;
  display: grid;
  place-items: center;
  min-height: 100vh;
}

img {
  max-width: min(60vw, 400px);
  height: auto;
  display: block;
}