body {
  margin: 0;
  font-family: Arial, sans-serif;
  line-height: 1.6;
}

.container {
  width: 90%;
  max-width: 1000px;
  margin: auto;
}

header {
  background: #0a192f;
  color: white;
  padding: 15px 0;
}

header h1 {
  display: inline;
}

nav {
  float: right;
}

nav a {
  color: white;
  margin-left: 20px;
  text-decoration: none;
}

.hero {
  background: #112240;
  color: white;
  padding: 100px 0;
  text-align: center;
}

.btn {
  display: inline-block;
  margin-top: 20px;
  padding: 10px 20px;
  background: #64ffda;
  color: #0a192f;
  text-decoration: none;
  font-weight: bold;
}

.section {
  padding: 60px 0;
}

.section.alt {
  background: #f4f4f4;
}

footer {
  background: #0a192f;
  color: white;
  text-align: center;
  padding: 20px 0;
}