body {
  margin: 0;
  padding: 0;
  font-family: Arial, sans-serif;
  background-color: #fff;
  color: #111;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
}

main.centered {
  text-align: center;
}

.red-title {
  color: red;
  font-size: 2.0em;
  margin-bottom: 20px;
}

img {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
}