body {
  font-family: sans-serif;
  margin: 0;
  padding: 0;
  line-height: 1.6;
}
header nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #001f3f;
  color: white;
  padding: 1em;
}
header nav ul {
  list-style: none;
  display: flex;
  gap: 1em;
}
header nav a {
  color: white;
  text-decoration: none;
}
.hero {
  background: #003366;
  color: white;
  padding: 2em;
  text-align: center;
}
.cta {
  display: inline-block;
  margin: 1em 0.5em;
  padding: 0.75em 1.5em;
  background: #ff851b;
  color: white;
  text-decoration: none;
  border-radius: 5px;
}
.cta.secondary {
  background: #7fdbff;
  color: black;
}
main {
  padding: 2em;
}
footer {
  background: #f4f4f4;
  padding: 2em;
  text-align: center;
}
footer h3 {
  margin-top: 0;
}