css
/* style.css */
body {
  background-color: #000;
  font-family: Arial, sans-serif;
  color: #000;
}

h1 {
  border: 4px solid #FF0000;
  text-shadow: 1px 1px 1px black;
  font-size: 36px;
  font-weight: bold;
  margin-bottom: 10px;
}

h2 {
  border: 4px solid #00FF00;
  text-shadow: 1px 1px 1px black;
  font-size: 24px;
  font-weight: bold;
  margin-bottom: 10px;
  margin-top: -20px;
  padding: 10px 0;
}

h3 {
  border: 4px solid #0000FF;
  text-shadow: 1px 1px 1px black;
  font-size: 18px;
  font-weight: bold;
  margin-bottom: 10px;
  margin-top: -20px;
  padding: 10px 0;
}

h4 {
  border: 4px solid #FF00FF;
  text-shadow: 1px 1px 1px black;
  font-size: 18px;
  font-weight: bold;
  margin-bottom: 10px;
  margin-top: -20px;
  padding: 10px 0;
}

h5 {
  border: 4px solid #00FF00;
  text-shadow: 1px 1px 1px black;
  font-size: 18px;
  font-weight: bold;
  margin-bottom: 10px;
  margin-top: -20px;
  padding: 10px 0;
}

h6 {
  border: 4px solid #FF0000;
  text-shadow: 1px 1px 1px black;
  font-size: 14px;
  font-weight: bold;
  margin-bottom: 10px;
  margin-top: -20px;
  padding: 10px 0;
}

p {
  border: 4px solid #0000FF;
  font-size: 18px;
  margin-bottom: 20px;
  margin-top: -10px;
  padding: 10px 0;
}

a {
  text-decoration: none;
  color: #000;
  text-shadow: 1px 1px 1px black;
  border: 4px solid #FFFFFF;
  padding: 10px 20px;
  font-size: 18px;
  font-weight: bold;
  background-color: #00FF00;
  border-radius: 0px;
  margin: 10px;
}

a:hover {
  background-color: #000000;
  color: #FFFFFF;
  border: 4px solid #00FF00;
  text-decoration: none;
  transition: background-color 0.5s ease-in-out;
}

body > * {
  box-shadow: 0px 0px 10px black;
}