body {
  background-color: black;
  color: white;
  text-align: center;
  font-family: Arial, sans-serif;
}

h1 {
  color: red;
}

a {
  color: yellow;
  font-size: 18px;
}

img {
  border: 3px solid white;
  margin: 10px;
  max-width: 500px;
}

hr {
  border: 1px solid white;
}

.content-box {
  background-color: black;
}