html {
  scroll-padding-top: 110px;
}

body {
  font-family: Arial, sans-serif;
  margin: 0;
  line-height: 1.6;
  color: #222;
  background: #f9f9f9;
}

header {
  background: #111;
  color: #fff;
  padding: 2rem;
  text-align: center;
}

nav {
  background: #fff;
  padding: 1rem;
  text-align: center;
  border-bottom: 1px solid #ddd;
  position: sticky;
  top: 0;
  z-index: 1000;
}

nav a {
  margin: 0 10px;
  text-decoration: none;
  color: #333;
  font-weight: bold;
}

nav a:hover {
  text-decoration: underline;
}

main {
  max-width: 900px;
  margin: auto;
  padding: 2rem;
}

section {
  margin-bottom: 3rem;
}

h2 {
  border-bottom: 2px solid #ddd;
  padding-bottom: 0.5rem;
}

.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

ul {
  padding-left: 20px;
}

footer {
  text-align: center;
  padding: 2rem;
  background: #eee;
  margin-top: 2rem;
}

@media (max-width: 700px) {
  .grid {
    grid-template-columns: 1fr;
  }

  nav {
    font-size: 0.9rem;
  }
}