body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background-color: #5d8a60;
  color: white;
}

.topnav {
  overflow: hidden;
  background-color: #333;
}

.topnav a {
  float: left;
  color: #f2f2f2;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
  font-size: 17px;
}

.topnav a:hover {
  background-color: #ddd;
  color: black;
}

.topnav a.active {
  background-color: #5d8a60;
  color: white;
}

h1 {
  margin-left: 10%;
}

p, ul, h2, form {
  margin-left: 8%;
  margin-right: 40%;
  font-size: large;
}

li {
  margin-top: 20px;
}

.supertext {
  font-size: 72px;
  font-weight: bold;
  color: #ffffff;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
  margin: 40px 0 20px 0;
  line-height: 1;
  letter-spacing: 3px;
  font-family: 'Courier New', monospace;
  text-align: center;
}

.subtext {
  font-size: 18px;
  color: #e0e0e0;
  text-shadow: 0 1px 5px rgba(0, 0, 0, 0.3);
  margin: 10px 0;
  font-weight: 300;
  letter-spacing: 1px;
  text-align: center;
}

.prev-button, .next-button {
  background-color: rgba(255, 255, 255, 0.1);
  border: 2px solid rgba(255, 255, 255, 0.3);
  color: white;
  padding: 20px 15px;
  font-size: 32px;
  cursor: pointer;
  border-radius: 8px;
  transition: all 0.3s ease;
  height: 100%;
  min-height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.prev-button:hover:not(:disabled), .next-button:hover:not(:disabled) {
  background-color: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.6);
  transform: scale(1.05);
}

.prev-button:active:not(:disabled), .next-button:active:not(:disabled) {
  transform: scale(0.95);
}

.prev-button:disabled, .next-button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.prev-button::before {
  content: "‹";
}

.next-button::before {
  content: "›";
}