* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: Arial, sans-serif;
  background-color: #f4f4f4;
  line-height: 1.6;
}

header {
  background: darkblue;
  color: white;
  padding: 15px;
  text-align: center;
  font-size: 1.5em;
}

nav {
  width: 100%;
  background: blue;
  padding: 10px 0;
}
nav ul {
  list-style: none;
  display: flex;
  justify-content: center;
  gap: 15px;
}

nav ul li a {
  color: white;
  text-decoration: none;
  padding: 10px 20px;
  border-radius: 10px;
  transition: all 0.3s ease-in-out;
  display: block;
}
nav ul li a:hover {
  background: lightblue;
  color: black;
  transform: translateY(-3px);
}

.dropdown-content {
  display: none;
  position: absolute;
  background-color: #f9f9f9;
  min-width: 160px;
  border-radius: 10px;
  box-shadow: 0px 8px 16px rgba(0, 0, 0, 0.2);
  z-index: 1;
}
.dropdown-content a{
  color: black;
}

.dropdown:hover .dropdown-content {
  display: block;
}

main {
  max-width: 800px;
  margin: 20px auto;
  padding: 20px;
  background: white;
  box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.1);
  border-radius: 8px;
  text-align: center;
}
main h1,
main h2,
main h3 {
  margin-bottom: 10px;
}
main p {
  font-size: 18px;
  color:black;
  margin-bottom: 20px;
}
main ul {
  text-align: left;
  margin-top: 10px;
  padding-left: 20px;
}
main ul li {
  margin-bottom: 10px;
}

footer {
  background: darkblue;
  color: white;
  text-align: center;
  padding: 10px;
  margin-top: 20px;
}

@media (max-width: 600px) {
  nav ul {
    flex-direction: column;
    align-items: center;
  }
  nav ul li {
    margin: 5px 0;
  }
  main {
    padding: 15px;
  }
}