css
body {
  background-color: #ff00ff; /* bright pink background */
  font-family: 'Arial Black', Arial, sans-serif;
  font-size: 16px;
  font-weight: bold;
  margin: 0;
  padding: 0;
  border: 4px solid black; /* harsh black border */
  box-shadow: 0 0 10px black;
  -webkit-print-color-adjust: black;
  -moz-print-color-adjust: black;
  -o-print-color-adjust: black;
  -ms-print-color-adjust: black;
  print-color-adjust: black;
}

a {
  color: #00ff00; /* bright green text */
  text-decoration: none;
  border: 4px solid black; /* thick black border */
  background-color: #333;
  padding: 8px 16px;
  border-radius: 4px;
  transition: background-color 0.5s ease;
  box-shadow: 0 0 10px black;
}

a:hover {
  background-color: #333;
  color: black;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.5s ease;
  box-shadow: 0 0 10px black;
}

h1 {
  font-size: 24px;
  font-weight: bold;
  margin: 0;
  padding: 0;
  color: #000;
  text-shadow: 0 0 10px black;
  border-bottom: 4px solid black;
}

h2 {
  font-size: 20px;
  font-weight: bold;
  margin: 0;
  padding: 0;
  color: #000;
  text-shadow: 0 0 10px black;
  border-bottom: 4px solid black;
}

h3 {
  font-size: 18px;
  font-weight: bold;
  margin: 0;
  padding: 0;
  color: #000;
  text-shadow: 0 0 10px black;
  border-bottom: 4px solid black;
}

p {
  font-size: 14px;
  color: #000;
  margin: 0;
  padding: 0;
  text-shadow: 0 0 10px black;
  border-bottom: 4px solid black;
}

code {
  font-size: 12px;
  background-color: #333;
  padding: 4px 8px;
  border: 4px solid black;
  border-radius: 4px;
  white-space: pre;
  word-wrap: break-word;
  word-break: break-all;
  text-shadow: 0 0 10px black;
}