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

html, body {
  min-height: 100vh;
}

body {
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fff;
}

.center img {
  display: block;
  max-width: 100%;
  height: auto;
}