css
/* styles.css */

body {
  background-color: #f0f0f0; /* Flat gray background to represent the vastness of the multiverse */
  font-family: Arial, sans-serif;
  font-size: 14px;
  margin: 0;
  border: 4px solid #000; /* Thick black border to symbolize the fragility of reality */
}

h1, h2, h3 {
  font-family: "Arial Black", sans-serif;
  font-weight: bold;
  color: #ff0000; /* Bright red to represent the chaos of the multiverse */
  text-shadow: 0 0 10px #000;
}

h2 {
  font-size: 18px;
  line-height: 1.1;
}

p {
  margin: 0 0 1em 0;
  padding: 0 0 0 0;
}

/* Interdimensional navigation links */

a {
  text-decoration: none;
  color: #00ff00; /* Bright green to represent the infinite possibilities of the multiverse */
  text-shadow: 0 0 10px #000;
  padding: 10px 20px;
  border: 1px solid #000;
  border-radius: 5px;
  background-color: #ccc;
  background-image: linear-gradient(to bottom, #ccc, #aaa);
  background-size: 100% 20px;
  background-position: 0 10px;
  background-repeat: no-repeat;
  background-attachment: fixed;
}

a:hover {
  background-position: 0 0;
  background-color: #333;
}

a:active {
  background-color: #000;
  color: #fff;
}

a:link {
  text-decoration: none;
  color: #00ff00;
  text-shadow: 0 0 10px #000;
  padding: 10px 20px;
  border: 1px solid #000;
  border-radius: 5px;
  background-color: #ccc;
  background-image: linear-gradient(to bottom, #ccc, #aaa);
  background-size: 100% 20px;
  background-position: 0 10px;
  background-repeat: no-repeat;
  background-attachment: fixed;
}

/* Interdimensional sickness treatment page specific styles */

h2 {
  background-image: linear-gradient(to bottom, #ff0, #f00);
  background-size: 100% 20px;
  background-position: 0 10px;
  background-repeat: no-repeat;
  background-attachment: fixed;
}

h3 {
  font-size: 16px;
  line-height: 1.1;
  font-weight: bold;
  color: #00ff00;
  text-shadow: 0 0 10px #000;
}

p {
  margin: 0 0 1em 0;
  padding: 0 0 0 0;
  font-size: 12px;
}