body {
  font-family: Arial, sans-serif;
  background: #f4f4f9;
  margin: 0;
  padding: 0;
}
header {
  background: #004080;
  color: #fff;
  padding: 20px;
  text-align: center;
}
nav {
  margin-top: 10px;
}
nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
nav ul li {
  display: inline-block;
  margin: 0 15px;
}
nav ul li a {
  color: #fff;
  text-decoration: none;
  font-weight: bold;
}
nav ul li a:hover {
  color: #ffcc00; /* highlight on hover */
  text-decoration: underline;
}
 nav ul li a.active {
  border-bottom: 2px solid #ffcc00;
}

section {
  padding: 20px;
  max-width: 800px;
  margin: auto;
}
footer {
  background: #ddd;
  text-align: center;
  padding: 10px;
  margin-top: 20px;
}
.btn {
  display: inline-block;
  padding: 10px 15px;
  background: #004080;
  color: #fff;
  text-decoration: none;
  border-radius: 5px;
}

/* new style added */
nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

nav ul li {
  display: inline-block;
  margin: 0 15px;
}

nav ul li a {
  color: #fff;
  text-decoration: none;
  font-weight: bold;
}

nav ul li a:hover {
  color: #ffcc00; /* highlight on hover */
  text-decoration: underline;
}
/* new style for */
 /* Base nav styles */
nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

nav ul li {
  display: inline-block;
  margin: 0 15px;
}

nav ul li a {
  color: #fff;
  text-decoration: none;
  font-weight: bold;
}

/* Hamburger icon */
.menu-toggle {
  display: none;
  font-size: 28px;
  cursor: pointer;
  color: #fff;
}

/* Responsive styles */
@media (max-width: 768px) {
  nav ul {
    display: none;
    flex-direction: column;
    background: #004080;
    padding: 10px;
  }

  nav ul li {
    display: block;
    margin: 10px 0;
  }

  .menu-toggle {
    display: block;
    text-align: right;
  }

  nav.active ul {
    display: flex;
  }
}