css
/* styles.css */

body {
  background-color: #ff00ff; /* bright pink background */
  font-family: "Menlo", sans-serif;
  font-size: 18px;
  color: #000000; /* black text color */
}

h1 {
  font-size: 30px;
  color: #ffffff; /* bright white text color */
  text-shadow: 0 0 5px #000000; /* harsh text shadow */
  border-bottom: 5px solid #000000; /* thick black border */
}

h2 {
  font-size: 20px;
  font-weight: bold;
  color: #000000; /* black text color */
  border-bottom: 4px solid #000000; /* thick black border */
}

p {
  font-size: 16px;
  line-height: 24px;
  color: #000000; /* black text color */
  margin-bottom: 16px;
}

a {
  font-weight: bold;
  text-decoration: none;
  color: #000000; /* black text color */
  text-shadow: 0 0 5px #000000; /* harsh text shadow */
  border-bottom: 4px solid #000000; /* thick black border */
}

a:hover {
  color: #ff0000; /* bright red hover color */
}

#quantumphysics {
  width: 80%;
  margin: 40px auto;
  background-color: #ff00ff; /* bright pink background */
  padding: 16px;
  border: 5px solid #000000; /* thick black border */
}

#quantumphysics h2 {
  font-size: 24px;
  color: #000000; /* black text color */
  border-bottom: 8px solid #000000; /* thick black border */
}

/* styles for subpage links */
a:hover {
  background-color: #00ff00; /* bright green hover color */
  border-bottom: 4px solid #000000; /* thick black border */
}

/* end of styles.css */