body, html {
  margin: 0;
  padding: 0;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  overflow: hidden;
  background: #fefefe;
  color: #222;
  font-family: 'Roboto', sans-serif;
}

img {
  max-width: 100vw;
  max-height: 100vh;
  width: auto;
  height: auto;
  object-fit: contain;
}

footer {
  position: absolute;
  bottom: 0;
  width: 100%;
  text-align: center;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.8);
}