* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, sans-serif;
}

body {
  line-height: 1.6;
}

.container {
  width: 90%;
  max-width: 1100px;
  margin: auto;
}

header {
  background: #111;
  color: #fff;
  padding: 15px 0;
}

header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

header nav a {
  color: #fff;
  margin-left: 20px;
  text-decoration: none;
}

.hero {
  background: #f4f4f4;
  padding: 80px 0;
  text-align: center;
}

.hero h2 {
  font-size: 2.5rem;
  margin-bottom: 10px;
}

.hero p {
  margin-bottom: 20px;
}

.btn {
  display: inline-block;
  background: #007BFF;
  color: #fff;
  padding: 10px 20px;
  text-decoration: none;
  border-radius: 5px;
}

.section {
  padding: 60px 0;
  text-align: center;
}

.section.alt {
  background: #f9f9f9;
}

.grid {
  display: flex;
  gap: 20px;
  margin-top: 30px;
  flex-wrap: wrap;
}

.card {
  flex: 1;
  min-width: 250px;
  background: #fff;
  padding: 20px;
  border: 1px solid #ddd;
  border-radius: 8px;
}

footer {
  background: #111;
  color: #fff;
  text-align: center;
  padding: 20px 0;
}