css
body {
  background-image: linear-gradient(to bottom, #f2f0f0, #e0d0d0);
  background-size: 100px 100px;
  background-position: 0 0;
  background-repeat: no-repeat;
  padding: 0;
  margin: 0;
  border: 4px solid black;
  border-style: solid;
  border-width: 4px;
  border-color: black;
  font-family: Arial, sans-serif;
  font-size: 24px;
  font-weight: bold;
  color: #00ff00;
  text-align: center;
  text-shadow: 0 0 10px black;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.3);
  transition: background-color 0.3s ease-in-out;
  width: 100%;
  height: 100%;
  position: relative;
  top: 10px;
  left: 10px;
}

h1 {
  background-color: #ff00ff;
  border: 4px solid black;
  border-style: solid;
  border-width: 4px;
  border-color: black;
  font-family: Arial, sans-serif;
  font-size: 36px;
  font-weight: bold;
  color: #000000;
  text-align: center;
  text-shadow: 0 0 10px black;
  padding: 10px;
  margin: 10px;
  background-image: linear-gradient(to bottom, #f2f0f0, #f0f0f0);
  background-size: 100px 100px;
  background-position: 0 0;
  background-repeat: no-repeat;
  position: relative;
  top: 20px;
  left: 20px;
  width: 100%;
  height: 100%;
  transition: background-color 0.3s ease-in-out;
}

h2 {
  background-color: #ff00ff;
  border: 4px solid black;
  border-style: solid;
  border-width: 4px;
  border-color: black;
  font-family: Arial, sans-serif;
  font-size: 24px;
  font-weight: bold;
  color: #000000;
  text-align: center;
  text-shadow: 0 0 10px black;
  padding: 10px;
  margin: 10px;
  background-image: linear-gradient(to bottom, #f2f0f0, #f0f0f0);
  background-size: 100px 100px;
  background-position: 0 0;
  background-repeat: no-repeat;
  position: relative;
  top: 40px;
  left: 40px;
  width: 100%;
  height: 100%;
  transition: background-color 0.3s ease-in-out;
}

a {
  background-color: #000000;
  border: 4px solid black;
  border-style: solid;
  border-width: 4px;
  border-color: black;
  color: #ffffff;
  text-decoration: none;
  text-align: center;
  text-shadow: 0 0 10px black;
  padding: 10px 20px;
  margin: 10px 20px;
  background-image: linear-gradient(to bottom, #f2f0f0, #f0f0f0);
  background-size: 100px 100px;
  background-position: 0 0;
  background-repeat: no-repeat;
  position: relative;
  top: 60px;
  left: 60px;
  width: 200px;
  height: 50px;
  transition: background-color 0.3s ease-in-out;
  font-size: 18px;
  font-weight: bold;
}