/* Global styles */
body {
  font-family: Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: #555;
  background-color: #f9f9f9;
}

/* Header styles */
header {
  background-color: #f9f9f9;
  color: #444;
  padding: 20px;
}

header h1 {
  margin: 0;
  font-size: 36px;
  text-shadow: 1px 1px 1px rgba(0, 0, 0, 0.1);
}

header p {
  margin: 0;
  font-size: 18px;
}

/* Navigation styles */
nav {
  background-color: #4a6572;
  color: #fff;
  padding: 10px;
}

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

nav li {
  display: inline-block;
  margin-right: 10px;
}

nav a {
  display: block;
  padding: 5px;
  color: #fff;
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: border-bottom-color 0.2s ease-in-out;
}

nav a:hover {
  background-color: #fff;
  color: #4a6572;
  border-bottom-color: #4a6572;
}

/* Main content styles */
main {
  max-width: 800px;
  margin: 0 auto;
  padding: 20px;
  background-color: #fff;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

main h1 {
  font-size: 28px;
  margin-bottom: 20px;
  color: #4a6572;
}

main p {
  font-size: 16px;
  line-height: 1.6;
  margin-bottom: 20px;
}

/* Footer styles */
footer {
  background-color: #4a6572;
  color: #fff;
  padding: 10px;
  text-align: center;
  font-size: 14px;
}

/* Lighter border-bottom color for headings */
h1, h2, h3 {
  border-bottom: 2px solid #e74c3c;
}

/* Lighter link color */
a {
  color: #2980b9;
}

/* Lighter hover effect for navigation links */
nav a:hover {
  background-color: #fff;
  color: #2980b9;
  border-bottom-color: #2980b9;
}

/* Lighter background color for buttons */
button {
  background-color: #2980b9;
  color: #fff;
  border: none;
  border-radius: 3px;
  padding: 8px 16px;
  font-size: 16px;
  cursor: pointer;
  transition: background-color 0.2s ease-in-out;
}

button:hover {
  background-color: #e74c3c;
}

/* Responsive styles */
@media (max-width: 768px) {
  header h1 {
    font-size: 24px;
  }

  nav {
    padding: 5px;
  }

  nav li {
    display: block;
    margin: 0;
    margin-bottom: 5px;
  }

  main {
    padding: 10px;
  }

  footer {
    padding: 5px;
  }
}