body {
  background: gray;
  font-family: Arial, sans-serif;
  font-size: 16px;
  margin-left: auto;
  margin-right: auto;
  max-width: 756px;
  text-align: center;
  color: #fff;
}

header h1 {
  font-size: 25vw;
  margin: 20px auto;
  text-shadow: 5px 5px white;
  color: #000;
}

main {
  display: block;
  background: #fff;
  color: #000;
  padding: 1em;
  margin-bottom: 3em;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
  box-shadow: 0 10px #000;
}

main > p {
  text-align: justify;
}

ul {
  padding: 0;
}

#links li {
  display: inline-block;
}

#links li::after {
  content: " \25aa";
}

#links li:last-of-type::after {
  content: "";
}

a {
  text-decoration: none;
  border-bottom: solid #595959;
  color: #595959;
}

a:hover,
a:focus {
  border: none;
  color: #000;
  outline: none;
}

@media (min-width: 600px) {
  header h1 {
    font-size: 10em;
    margin-top: 10%;
  }
  main {
    border: solid #000;
    box-shadow: 10px 10px #000;
  }
}