css
@charset "UTF-8";
body {
  font-family: Arial, sans-serif;
  background-color: #000000;
  color: #ffffff;
}

a {
  text-decoration: none;
  color: #00ff00;
  font-size: 24px;
  text-align: center;
  border: 4px solid #000000;
  border-radius: 0;
  padding: 10px 20px 10px 20px;
  font-weight: bold;
  text-transform: uppercase;
  background-color: #333333;
  display: block;
  margin: 10px 0 10px 0;
  box-shadow: 0 0 0 #000000;
}

h1 {
  font-size: 36px;
  color: #ff0000;
  border-bottom: 4px solid #000000;
  padding-bottom: 10px 0 10px 0;
  margin: 0 0 20px 0;
  text-align: center;
  font-weight: bold;
  background-color: #333333;
}

h2 {
  font-size: 24px;
  color: #00ff00;
  border-bottom: 4px solid #000000;
  padding-bottom: 10px 0 10px 0;
  margin: 10px 0 20px 0;
  text-align: center;
  font-weight: bold;
  background-color: #333333;
}

h3 {
  font-size: 18px;
  color: #00ff00;
  border-bottom: 4px solid #000000;
  padding-bottom: 10px 0 10px 0;
  margin: 20px 0 10px 0;
  text-align: center;
  font-weight: bold;
  background-color: #333333;
}

p {
  font-size: 14px;
  color: #ffffff;
  margin: 10px 0 20px 0;
  line-height: 1.5;
  text-align: center;
  font-family: Arial, sans-serif;
  background-color: #000000;
  border: 4px solid #000000;
}

ul {
  list-style: none;
  margin: 20px 0 0 0;
  padding: 0 0 0 0;
}

li {
  padding: 0 20px 0 20px;
  margin: 0 0 0 0;
  background-color: #333333;
  border-bottom: 4px solid #000000;
}

li a {
  text-decoration: none;
  color: #00ff00;
  font-size: 18px;
  text-align: center;
  border: 4px solid #000000;
  border-radius: 0;
  padding: 10px 20px 10px 20px;
  font-weight: bold;
  text-transform: uppercase;
  background-color: #333333;
  display: block;
  margin: 0 0 0 0;
  box-shadow: 0 0 0 #000000;
}